Condensed export of Claude Code session fafce14e-2717-48c1-984e-20e5a0c1b9af, 2026-10-15 09:21 to 2026-10-15 15:50 UTC. It contains only the conversation: the user's messages and Claude's replies. Thinking, tool calls and tool output are left out.

User · 09:21

continue

Claude · 09:21

Resuming at phase 8 step 2 (demo mode). Let me read the design notes first.

Picking up phase 8 step 2 (demo mode). I'm still reading the code: the auth components, payments and Oban, to see where the demo hooks go.

Still surveying. Next I'm checking the seed tests, the layouts and the DOCKER.md demo sections, then I'll start writing Mercator.Demo.

I've finished surveying, so I'm writing the code now. First up are the Mercator.Demo module, the nightly reset worker and the seed changes.

Now the config: the cron entry, the time zone and the MERCATOR_MODE switch in runtime.exs.

Next, seeding at start in application.ex, and Release.seed switched over to Demo.seed.

Compiles. Next: the #46 protection, a validation for password/role changes and a preparation for the password reset.

Now the sign-in page. I'm checking how the AshAuthentication password form builds its input IDs, so the demo panel can fill them in.

The demo login components are done. Now I'm writing the custom sign-in LiveView that wraps the AshAuthentication one and adds the demo card.

Now the badge in both headers of layouts.ex.

Next, the account page: public demo accounts get a note instead of the password form.

Code is in place. Now the tests. Checking the test helpers and an existing accounts test for conventions:

Writing the domain tests for demo mode, protection, seeding and reset:

All 10 pass. Now the LiveView tests: sign-in card, badge, account page and admin roles form.

The protection also blocks the fixture itself, so the expected behaviour is working. I'll set the roles with Ash.Seed in those two tests instead.

Both test files pass. Next, the German translations.

Credo found two alias-order issues. Fixing them:

Sobelow flags the TRUNCATE with interpolated table names. The names come from pg_tables through quote_ident, so it's a false positive. Checking how this project records Sobelow skips:

Precommit is green: 617 tests pass. Now I'm updating the docs: DOCKER.md, .env.example, the design doc and the roadmap.

Docs are updated. Running the full precommit once more, then committing:

Committed. Updating the resume-point memory:

Phase 8 step 2 (demo mode) is finished and committed as 9dc629c. mix precommit passes with 617 tests, 17 of them new. I haven't checked it in a browser or a container yet; the tests are the only check so far.

What MERCATOR_MODE=demo now does:

• Seeds itself: at start, if the database has no users, the demo data is loaded, photos included. The admin gets DEMO_ADMIN_PASSWORD; in production the app won't start if it's missing, shorter than 8 characters, or change-me. All other demo users get mercator-demo.
• Sign-in page: a card lists the public demo logins, each with a "Verwenden" button that fills in the form, plus a note that everything is reset at night. The register and password-reset pages show only that note.
• Protected accounts (#46): the public demo accounts can't change their password or roles, or request a password reset. The account page and the user admin page say so instead of showing the forms. The admin account isn't covered.
• Badge: a "Demo" badge in the shop and admin headers.
• Payment: the simulator is registered and switched on as the active provider.
• Nightly reset at 03:00:
  • All tables are emptied except the migrations and Oban's, so visitors' accounts are deleted.
  • Pending background jobs are dropped and uploads are deleted.
  • The demo data is seeded again.
  • Manual reset: bin/mercator rpc "Mercator.Demo.reset()".

Side effects to check:

• Cron time zone: scheduled jobs now run on the shop's time zone (Vienna, or SHOP_TIME_ZONE) instead of UTC. The two existing jobs keep their clock times, so the basket cleanup and offer expiry now run at those times in Vienna time.
• Sobelow: it flagged the reset's TRUNCATE as possible SQL injection. The table names come from Postgres itself and are quoted, so I added the finding to .sobelow-skips and gave the reason in .sobelow-conf.
• Partial seed: if seeding at start fails partway, the next start won't seed again, because users already exist. Running the reset command fixes that.

DOCKER.md, .env.example, the design doc and the roadmap are updated.

Next:

1. Could you run the demo locally with MERCATOR_MODE=demo (container or mix phx.server) and check the sign-in card and the badge?
2. Then step 3 is yours: the home server deployment, following DOCKER.md.
3. After that comes the Mollie webhook test.

Question: the docs still list #118 (SMTP account) and #119 (gen_smtp) as open, but step 1 already settled both (mail.example.net on port 465, gen_smtp added). Shall I mark them as decided?

User · 09:58

yes, they are done

Claude · 10:00

I've marked #118 and #119 as decided and committed it as 8397365:

• #118: emails go out through the mittenin.at mail server (mail.example.net, port 465 with TLS), like pan.
• #119: gen_smtp is added as a dependency for sending by SMTP.

Both are now listed as decisions in roadmap-history.md. The open-questions list in roadmap-future.md is empty, and phase 8 there now says #114–#119 are decided.

The email section of deployment-design.md was out of date, so I corrected it to match the real settings. The server is set in SMTP_RELAY (it said SMTP_HOST), the default port is 465 (it said 587), and the certificate check can be switched off with SMTP_TLS_VERIFY=false.

Next up is the same as before: please try demo mode locally, then the home server deployment.

User · 10:02

mercator mode demo running now, you can check via tidewave

Claude · 10:02

Server side looks right. Now the browser.

No browser is connected to Tidewave, so I'll fetch the pages over HTTP instead:

I checked the running server through Tidewave, and demo mode is active and working as intended:

• App state: demo mode is on. The payment simulator is the only registered provider and the active one. Scheduled jobs run on Europe/Vienna time. sales@mittenin.at is recognised as a public demo account. The logs show no errors.
• /sign-in: the demo card lists the six public logins: sales, manager, content, products, kunde and customer. The admin isn't listed.
• /register: shows only the nightly-reset note, without the logins.
• /: the shop header shows the Demo badge.

Two things to know:

• Nothing was seeded at start. Your dev database already had users (8), so the automatic seeding correctly did nothing, and the admin keeps their current password. Seeding only kicks in on an empty database, as in a fresh container.
• I couldn't check anything that needs a real browser. No browser was connected to Tidewave, so I fetched the pages over HTTP. I haven't seen how the card looks, and I haven't tried the "Verwenden" button that fills in the sign-in form. If you open http://localhost:4000/tidewave in a browser tab, I can check both. Or click a "Verwenden" button on /sign-in yourself: email and password should fill in, and signing in should work.

User · 10:03

now tidewave browser session running ...

Claude · 10:03

The card renders with German texts. Next I'll check the layout and the fill-in button:

The layout is right at all three widths. Restoring the browser size, then running precommit:

Good to hear. The layout is committed as b625d35, and precommit passes with 617 tests.

What I checked in your browser tab:

• Fill-in button: "Verwenden" fills in the email and password.
• Layout:
  • From 1024 px up, the demo card sits to the right of the form. That covers full HD and the 1100 px I also measured.
  • On a phone (390 px) the cards are stacked, and the page no longer scrolls sideways. Before, it overflowed by about 50 px.
  • Outside demo mode, the form stays centered alone.
• I set your browser window back to its original size afterwards.

I didn't press the sign-in button itself, so your tab didn't get signed in as a demo user. Signing in is covered by the tests.

Next is step 3, the deployment on the home server with DOCKER.md. That part is yours.

User · 10:06

i will follow docker.md and come back to you.

Claude · 10:07

Good, I've noted that as the resume point. A few things to check on the server:

• .env:
  • MERCATOR_MODE=demo.
  • DEMO_ADMIN_PASSWORD must be at least 8 characters and not change-me, or the app won't start.
  • The SMTP settings need SMTP_RELAY.
  • Set TRUSTED_PROXIES to your reverse proxy.
• First start: the database is empty, so the demo seeds itself. docker compose logs -f app shows "Demo mode: … seeding" and later "demo data seeded". The photos take about a minute.
• Smoke test:
  1. On /sign-in, sign in as admin with DEMO_ADMIN_PASSWORD.
  2. Request "forgot password" for an account that isn't a demo login, to test SMTP. The demo logins are blocked from password reset.
  3. Download an offer PDF, to test Typst.
  4. Place a test order with the payment simulator.
• If seeding stops halfway: a restart won't seed again, because users already exist. docker compose exec app bin/mercator rpc "Mercator.Demo.reset()" empties the database and seeds again.

Once the demo is reachable at biber.mittenin.at, tell me and we'll do the Mollie step with real webhooks.

User · 10:08

after git pull no .env.example there. is it gitignored?

Claude · 10:09

No, .env.example isn't gitignored. .gitignore only lists /.env, and the file is tracked and on origin/main (git@git.example.com:Mercator/mercator.git). It has been in the repo since step 1, and step 2 last changed it.

The likely cause is that it starts with a dot, so a plain ls hides it. On the server, try:

ls -a                        # dotfiles are hidden by plain ls
git log --oneline -1         # should be b625d35
git ls-files .env.example    # prints the name if git tracks it

If git log shows an older commit, the pull didn't reach main. Check git status (right branch?) and git remote -v (same remote?).

When it's there:

cp .env.example .env

Then fill in .env as DOCKER.md describes. .env itself is the gitignored one, so later pulls never overwrite it.

User · 10:09

my bad! found it.

Claude · 10:09

No problem, dotfiles are easy to miss. Next is cp .env.example .env, fill it in, then docker compose build && docker compose up -d. Tell me if anything comes up during the deploy.

User · 10:14

I made one error during development, I told you to use robot@example.com, but we have a better fit robot@mittenin.at i fixed it at .env on the home server, but can you fix it in the codebase?

Claude · 10:15

Fixed: .env.example now uses robot@mittenin.at for both MAIL_FROM_ADDRESS and SMTP_USERNAME. That file was the only place the old address appeared outside the old session logs, which I left unchanged. Committed as fbc3891; precommit passes.

I haven't pushed it, so the server only gets it after you push and pull. That won't affect the running server either way, because it reads your own .env, which you've already fixed.

User · 10:17

you gave me a proxy config for nginx, can you also add a proxy config for caddy to DOCKER.md?

Claude · 10:22

I've added a Caddy example to the reverse proxy section of DOCKER.md, right after the nginx one, and committed it as d06dba0. It isn't pushed yet.

biber.mittenin.at {
    request_body {
        max_size 50MB   # uploads (product images, media, chat files)
    }
    reverse_proxy 127.0.0.1:4010
}

It's shorter than the nginx version because Caddy does most of it by default:

• It gets the HTTPS certificate by itself.
• It forwards WebSockets, which LiveView needs, and passes on the original host and client address.
• It speaks HTTP/1.1 to the app, which keeps the app's web server away from its open HTTP/2 issue.

The upload limit is the only extra setting. The section also says how to reload Caddy after changing it.

The note below the examples now lists a Caddy container too. A proxy running in a container can't reach 127.0.0.1:4010 on the host.

If Caddy runs directly on the host, the app sees its requests coming from Docker's network. That network is in the default TRUSTED_PROXIES, so you don't need to change anything for client IPs or rate limits.

User · 10:22

during compilation I saw several warnings:

[UNIX-ESSIO] Failed open sctp dynamic library: libsctp.so.1

but no error

Claude · 10:23

That warning is harmless. When the Erlang VM starts, it tries to load the SCTP network library (libsctp.so.1). The slim Ubuntu images don't include it, and the app never uses SCTP, so the build just carries on without it.

To silence it, I added the small libsctp1 package to both stages of the Dockerfile, with a comment explaining why. Without it you'd also see the warning at every container start, not just while building. Committed as c88826b; precommit passes, but I haven't run a Docker build with this change, so your next build on the server is the first real test. If the warning still shows up there, tell me.

It isn't pushed yet; none of the commits from this session are. Since the warning is harmless, you don't need to rebuild for it right away. It will go away the next time you pull and run docker compose build for some other reason.

User · 10:24

<pasted_content id="1f3a"> user@server:~/mercator$ docker compose ps NAME IMAGE COMMAND SERVICE CREATED STATUS PORTS mercator-app-1 mercator-app "/app/entrypoint.sh …" app 54 seconds ago Up 48 seconds 127.0.0.1:4010->4000/tcp mercator-db-1 postgres:17 "docker-entrypoint.s…" db 54 seconds ago Up 54 seconds (healthy) 5432/tcp </pasted_content id="1f3a">

Claude · 10:24

Both containers are up: the database is healthy, and the app has been running for 48 seconds without restarting. That means the migrations went through and the config was accepted, including DEMO_ADMIN_PASSWORD and SMTP_RELAY. The app refuses to start without those.

Next checks, on the server:

1. Seeding (it runs in the background on the first start):

   docker compose logs app | grep -i "demo mode"
   

   You should see "empty database, seeding the demo data" and, after a minute or so, "demo data seeded". Keep an eye out for errors with docker compose logs -f app.

2. The app answers locally (before going through the proxy):

   curl -sI http://127.0.0.1:4010/ | head -1
   

   This should print HTTP/1.1 200 OK.

3. Through the proxy: add the nginx or Caddy entry and open https://biber.mittenin.at. Then run the smoke test:

   1. Sign in as admin@mittenin.at with DEMO_ADMIN_PASSWORD.
   2. Request "forgot password" for an account that isn't a demo login, to test SMTP.
   3. Download an offer PDF, to test Typst.
   4. Place a test order with the payment simulator.

Paste anything odd from the logs and I'll look at it.

User · 10:25

<pasted_content id="1f3a"> user@server:~/mercator$ docker compose logs -f app

app-1 | =ESOCK WARNING MSG==== 15-Oct-2026::10:23:43.249151 === app-1 | [UNIX-ESSIO] Failed open sctp dynamic library: libsctp.so.1 app-1 | 10:23:44.268 [info] == Running 20261013102949 Mercator.Repo.Migrations.AddOban.up/0 app-1 | 10:23:44.281 [info] execute "DO $$\nBEGIN\nIF NOT EXISTS (SELECT 1 FROM pg_type\n WHERE typname = 'oban_job_state'\n AND typnamespace = 'public'::regnamespace::oid) THEN\n CREATE TYPE "public".oban_job_state AS ENUM (\n 'available',\n 'suspended',\n 'scheduled',\n 'executing',\n 'retryable',\n 'completed',\n 'discarded',\n 'cancelled'\n );\n END IF;\nEND$$;\n" app-1 | 10:23:44.282 [info] create table if not exists public.oban_jobs app-1 | 10:23:44.285 [info] create index if not exists public.oban_jobs_queue_index app-1 | 10:23:44.286 [info] create index if not exists public.oban_jobs_state_index app-1 | 10:23:44.286 [info] create index if not exists public.oban_jobs_scheduled_at_index app-1 | 10:23:44.287 [info] execute "CREATE OR REPLACE FUNCTION "public".oban_jobs_notify() RETURNS trigger AS $$\nDECLARE\n channel text;\n notice json;\nBEGIN\n IF (TG_OP = 'INSERT') THEN\n channel = 'public.oban_insert';\n notice = json_build_object('queue', NEW.queue, 'state', NEW.state);\n\n -- No point triggering for a job that isn't scheduled to run now\n IF NEW.scheduled_at IS NOT NULL AND NEW.scheduled_at > now() AT TIME ZONE 'utc' THEN\n RETURN null;\n END IF;\n ELSE\n channel = 'public.oban_update';\n notice = json_build_object('queue', NEW.queue, 'new_state', NEW.state, 'old_state', OLD.state);\n END IF;\n\n PERFORM pg_notify(channel, notice::text);\n\n RETURN NULL;\nEND;\n$$ LANGUAGE plpgsql;\n" app-1 | 10:23:44.288 [info] execute "DROP TRIGGER IF EXISTS oban_notify ON "public".oban_jobs" app-1 | 10:23:44.288 [info] trigger "oban_notify" for relation "public.oban_jobs" does not exist, skipping app-1 | 10:23:44.288 [info] execute "CREATE TRIGGER oban_notify\nAFTER INSERT OR UPDATE OF state ON "public".oban_jobs\nFOR EACH ROW EXECUTE PROCEDURE "public".oban_jobs_notify();\n" app-1 | 10:23:44.288 [info] drop index if exists public.oban_jobs_scheduled_at_index app-1 | 10:23:44.289 [info] create index public.oban_jobs_scheduled_at_index app-1 | 10:23:44.290 [info] create check constraint worker_length on table public.oban_jobs app-1 | 10:23:44.290 [info] create check constraint queue_length on table public.oban_jobs app-1 | 10:23:44.290 [info] execute "CREATE OR REPLACE FUNCTION "public".oban_wrap_id(value bigint) RETURNS int AS $$\nBEGIN\n RETURN (CASE WHEN value > 2147483647 THEN mod(value, 2147483647) ELSE value END)::int;\nEND;\n$$ LANGUAGE plpgsql IMMUTABLE;\n" app-1 | 10:23:44.291 [info] alter table public.oban_jobs app-1 | 10:23:44.291 [info] execute "DROP FUNCTION IF EXISTS "public".oban_wrap_id(value bigint)" app-1 | 10:23:44.291 [info] drop index if exists public.oban_jobs_scheduled_at_index app-1 | 10:23:44.291 [info] drop index if exists public.oban_jobs_queue_index app-1 | 10:23:44.292 [info] drop index if exists public.oban_jobs_state_index app-1 | 10:23:44.292 [info] create index if not exists public.oban_jobs_queue_state_scheduled_at_id_index app-1 | 10:23:44.292 [info] create index if not exists public.oban_jobs_attempted_at_id_index app-1 | 10:23:44.293 [info] alter table public.oban_jobs app-1 | 10:23:44.293 [info] alter table public.oban_jobs app-1 | 10:23:44.294 [info] drop index if exists public.oban_jobs_queue_state_scheduled_at_id_index app-1 | 10:23:44.294 [info] create index if not exists public.oban_jobs_state_queue_priority_scheduled_at_id_index app-1 | 10:23:44.295 [info] execute "CREATE OR REPLACE FUNCTION "public".oban_jobs_notify() RETURNS trigger AS $$\nDECLARE\n channel text;\n notice json;\nBEGIN\n IF NEW.state = 'available' THEN\n channel = 'public.oban_insert';\n notice = json_build_object('queue', NEW.queue);\n\n PERFORM pg_notify(channel, notice::text);\n END IF;\n\n RETURN NULL;\nEND;\n$$ LANGUAGE plpgsql;\n" app-1 | 10:23:44.295 [info] execute "DROP TRIGGER IF EXISTS oban_notify ON "public".oban_jobs" app-1 | 10:23:44.295 [info] execute "CREATE TRIGGER oban_notify\nAFTER INSERT ON "public".oban_jobs\nFOR EACH ROW EXECUTE PROCEDURE "public".oban_jobs_notify();\n" app-1 | 10:23:44.295 [info] alter table public.oban_jobs app-1 | 10:23:44.299 [info] execute "ALTER TYPE "public".oban_job_state ADD VALUE IF NOT EXISTS 'cancelled'" app-1 | 10:23:44.300 [info] enum label "cancelled" already exists, skipping app-1 | 10:23:44.300 [info] create index if not exists public.oban_jobs_state_queue_priority_scheduled_at_id_index app-1 | 10:23:44.300 [info] relation "oban_jobs_state_queue_priority_scheduled_at_id_index" already exists, skipping app-1 | 10:23:44.300 [info] alter table public.oban_jobs app-1 | 10:23:44.301 [info] create check constraint priority_range on table public.oban_jobs app-1 | 10:23:44.301 [info] create check constraint positive_max_attempts on table public.oban_jobs app-1 | 10:23:44.302 [info] create check constraint attempt_range on table public.oban_jobs app-1 | 10:23:44.302 [info] drop index if exists public.oban_jobs_args_vector app-1 | 10:23:44.302 [info] index "oban_jobs_args_vector" does not exist, skipping app-1 | 10:23:44.302 [info] drop index if exists public.oban_jobs_worker_gist app-1 | 10:23:44.302 [info] index "oban_jobs_worker_gist" does not exist, skipping app-1 | 10:23:44.302 [info] drop index if exists public.oban_jobs_attempted_at_id_index app-1 | 10:23:44.303 [info] create index if not exists public.oban_jobs_args_index app-1 | 10:23:44.304 [info] create index if not exists public.oban_jobs_meta_index app-1 | 10:23:44.304 [info] create table if not exists public.oban_peers app-1 | 10:23:44.305 [info] execute "ALTER TABLE "public".oban_peers SET UNLOGGED" app-1 | 10:23:44.306 [info] drop constraint priority_range from table public.oban_jobs app-1 | 10:23:44.307 [info] create check constraint non_negative_priority on table public.oban_jobs app-1 | 10:23:44.307 [info] execute "DROP TRIGGER IF EXISTS oban_notify ON "public".oban_jobs" app-1 | 10:23:44.307 [info] execute "DROP FUNCTION IF EXISTS "public".oban_jobs_notify()" app-1 | 10:23:44.307 [info] create index if not exists public.oban_jobs_state_cancelled_at_index app-1 | 10:23:44.308 [info] create index if not exists public.oban_jobs_state_discarded_at_index app-1 | 10:23:44.308 [info] execute "ALTER TYPE "public".oban_job_state ADD VALUE IF NOT EXISTS 'suspended' BEFORE 'scheduled'\n" app-1 | 10:23:44.308 [info] enum label "suspended" already exists, skipping app-1 | 10:23:44.308 [info] execute "COMMENT ON TABLE "public".oban_jobs IS '14'" app-1 | 10:23:44.309 [info] == Migrated 20261013102949 in 0.0s app-1 | 10:23:44.334 [info] == Running 20261013103034 Mercator.Repo.Migrations.InitializeAndAddAuthenticationResourcesExtensions1.up/0 app-1 | 10:23:44.335 [info] execute "CREATE OR REPLACE FUNCTION ash_elixir_or(left BOOLEAN, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE)\nAS $$ SELECT COALESCE(NULLIF($1, FALSE), $2) $$\nLANGUAGE SQL\nSET search_path = ''\nIMMUTABLE;\n" app-1 | 10:23:44.335 [info] execute "CREATE OR REPLACE FUNCTION ash_elixir_or(left ANYCOMPATIBLE, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE)\nAS $$ SELECT COALESCE($1, $2) $$\nLANGUAGE SQL\nSET search_path = ''\nIMMUTABLE;\n" app-1 | 10:23:44.335 [info] execute "CREATE OR REPLACE FUNCTION ash_elixir_and(left BOOLEAN, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) AS $$\n SELECT CASE\n WHEN $1 IS TRUE THEN $2\n ELSE $1\n END $$\nLANGUAGE SQL\nSET search_path = ''\nIMMUTABLE;\n" app-1 | 10:23:44.336 [info] execute "CREATE OR REPLACE FUNCTION ash_elixir_and(left ANYCOMPATIBLE, in right ANYCOMPATIBLE, out f1 ANYCOMPATIBLE) AS $$\n SELECT CASE\n WHEN $1 IS NOT NULL THEN $2\n ELSE $1\n END $$\nLANGUAGE SQL\nSET search_path = ''\nIMMUTABLE;\n" app-1 | 10:23:44.336 [info] execute "CREATE OR REPLACE FUNCTION ash_trim_whitespace(arr text[])\nRETURNS text[] AS $$\nDECLARE\n start_index INT = 1;\n end_index INT = array_length(arr, 1);\nBEGIN\n WHILE start_index <= end_index AND arr[start_index] = '' LOOP\n start_index := start_index + 1;\n END LOOP;\n\n WHILE end_index >= start_index AND arr[end_index] = '' LOOP\n end_index := end_index - 1;\n END LOOP;\n\n IF start_index > end_index THEN\n RETURN ARRAY[]::text[];\n ELSE\n RETURN arr[start_index : end_index];\n END IF;\nEND; $$\nLANGUAGE plpgsql\nSET search_path = ''\nIMMUTABLE;\n" app-1 | 10:23:44.337 [info] execute "CREATE OR REPLACE FUNCTION ash_raise_error(json_data jsonb)\nRETURNS BOOLEAN AS $$\nBEGIN\n -- Raise an error with the provided JSON data.\n -- The JSON object is converted to text for inclusion in the error message.\n RAISE EXCEPTION 'ash_error: %', json_data::text;\n RETURN NULL;\nEND;\n$$ LANGUAGE plpgsql\nSTABLE\nSET search_path = '';\n" app-1 | 10:23:44.337 [info] execute "CREATE OR REPLACE FUNCTION ash_raise_error(json_data jsonb, type_signal ANYCOMPATIBLE)\nRETURNS ANYCOMPATIBLE AS $$\nBEGIN\n -- Raise an error with the provided JSON data.\n -- The JSON object is converted to text for inclusion in the error message.\n RAISE EXCEPTION 'ash_error: %', json_data::text;\n RETURN NULL;\nEND;\n$$ LANGUAGE plpgsql\nSTABLE\nSET search_path = '';\n" app-1 | 10:23:44.338 [info] execute "CREATE OR REPLACE FUNCTION ash_required(value ANYCOMPATIBLE, payload jsonb)\nRETURNS ANYCOMPATIBLE AS $$\nBEGIN\n IF value IS NULL THEN\n RAISE EXCEPTION 'ash_error: %', payload::text;\n END IF;\n\n RETURN value;\nEND;\n$$ LANGUAGE plpgsql\nSTABLE\nSET search_path = '';\n" app-1 | 10:23:44.338 [info] execute "CREATE OR REPLACE FUNCTION uuid_generate_v7()\nRETURNS UUID\nAS $$\nDECLARE\n timestamp TIMESTAMPTZ;\n microseconds INT;\nBEGIN\n timestamp = clock_timestamp();\n microseconds = (cast(extract(microseconds FROM timestamp)::INT - (floor(extract(milliseconds FROM timestamp))::INT * 1000) AS DOUBLE PRECISION) * 4.096)::INT;\n\n RETURN encode(\n set_byte(\n set_byte(\n overlay(uuid_send(gen_random_uuid()) placing substring(int8send(floor(extract(epoch FROM timestamp) * 1000)::BIGINT) FROM 3) FROM 1 FOR 6\n ),\n 6, (b'0111' || (microseconds >> 8)::bit(4))::bit(8)::int\n ),\n 7, microseconds::bit(8)::int\n ),\n 'hex')::UUID;\nEND\n$$\nLANGUAGE PLPGSQL\nSET search_path = ''\nVOLATILE;\n" app-1 | 10:23:44.339 [info] execute "CREATE EXTENSION IF NOT EXISTS "citext"" app-1 | 10:23:44.346 [info] == Migrated 20261013103034 in 0.0s app-1 | 10:23:44.349 [info] == Running 20261013103035 Mercator.Repo.Migrations.InitializeAndAddAuthenticationResources.up/0 app-1 | 10:23:44.349 [info] create table tokens app-1 | 10:23:44.350 [info] create table users app-1 | 10:23:44.351 [info] == Migrated 20261013103035 in 0.0s app-1 | 10:23:44.353 [info] == Running 20261013105711 Mercator.Repo.Migrations.AddPasswordAuthenticationAndAddPasswordAuthAndAddMagicLinkAuth.up/0 app-1 | 10:23:44.353 [info] alter table users app-1 | 10:23:44.354 [info] create index users_unique_email_index app-1 | 10:23:44.355 [info] == Migrated 20261013105711 in 0.0s app-1 | 10:23:44.356 [info] == Running 20261013110429 Mercator.Repo.Migrations.AddUserRoles.up/0 app-1 | 10:23:44.357 [info] alter table users app-1 | 10:23:44.357 [info] == Migrated 20261013110429 in 0.0s app-1 | 10:23:44.359 [info] == Running 20261013110703 Mercator.Repo.Migrations.AddUserProfile.up/0 app-1 | 10:23:44.359 [info] alter table users app-1 | 10:23:44.359 [info] == Migrated 20261013110703 in 0.0s app-1 | 10:23:44.361 [info] == Running 20261013123631 Mercator.Repo.Migrations.AddCatalogTaxClasses.up/0 app-1 | 10:23:44.361 [info] create table tax_classes app-1 | 10:23:44.363 [info] create index tax_classes_unique_key_index app-1 | 10:23:44.363 [info] == Migrated 20261013123631 in 0.0s app-1 | 10:23:44.365 [info] == Running 20261013123850 Mercator.Repo.Migrations.AddCatalogCategoriesExtensions1.up/0 app-1 | 10:23:44.365 [info] execute "CREATE EXTENSION IF NOT EXISTS "ltree"" app-1 | 10:23:44.378 [info] == Migrated 20261013123850 in 0.0s app-1 | 10:23:44.380 [info] == Running 20261013123851 Mercator.Repo.Migrations.AddCatalogCategories.up/0 app-1 | 10:23:44.380 [info] create table categories app-1 | 10:23:44.382 [info] create index categories_unique_slug_index app-1 | 10:23:44.383 [info] create index categories_path_index app-1 | 10:23:44.384 [info] == Migrated 20261013123851 in 0.0s app-1 | 10:23:44.386 [info] == Running 20261013124131 Mercator.Repo.Migrations.AddCatalogProducts.up/0 app-1 | 10:23:44.386 [info] create table categorizations app-1 | 10:23:44.387 [info] create index categorizations_unique_category_product_index app-1 | 10:23:44.388 [info] create table prices app-1 | 10:23:44.389 [info] create table products app-1 | 10:23:44.390 [info] alter table categorizations app-1 | 10:23:44.391 [info] alter table products app-1 | 10:23:44.393 [info] create index products_unique_number_index app-1 | 10:23:44.394 [info] create index products_unique_slug_index app-1 | 10:23:44.394 [info] create table variants app-1 | 10:23:44.395 [info] alter table prices app-1 | 10:23:44.396 [info] alter table variants app-1 | 10:23:44.398 [info] create index variants_unique_number_index app-1 | 10:23:44.398 [info] == Migrated 20261013124131 in 0.0s app-1 | 10:23:44.400 [info] == Running 20261013124337 Mercator.Repo.Migrations.AddCatalogPropertiesAndRelations.up/0 app-1 | 10:23:44.401 [info] create table product_properties app-1 | 10:23:44.402 [info] create index product_properties_unique_product_property_index app-1 | 10:23:44.403 [info] create table product_relations app-1 | 10:23:44.404 [info] create index product_relations_unique_relation_index app-1 | 10:23:44.405 [info] create table properties app-1 | 10:23:44.406 [info] alter table product_properties app-1 | 10:23:44.407 [info] alter table properties app-1 | 10:23:44.408 [info] create table property_groups app-1 | 10:23:44.409 [info] alter table properties app-1 | 10:23:44.409 [info] alter table property_groups app-1 | 10:23:44.410 [info] == Migrated 20261013124337 in 0.0s app-1 | 10:23:44.413 [info] == Running 20261013130127 Mercator.Repo.Migrations.AddProductSearch.up/0 app-1 | 10:23:44.413 [info] execute "CREATE OR REPLACE FUNCTION mercator_product_document(lang regconfig, locale text, title jsonb, subtitle jsonb, description jsonb)\nRETURNS tsvector LANGUAGE sql IMMUTABLE PARALLEL SAFE AS $$\n SELECT setweight(to_tsvector(lang, coalesce(title->>locale, '')), 'A') ||\n setweight(to_tsvector(lang, coalesce(subtitle->>locale, '') || ' ' || coalesce(description->>locale, '')), 'B')\n$$;\n" app-1 | 10:23:44.413 [info] execute "CREATE INDEX products_search_de_index ON products USING gin (mercator_product_document('german', 'de', title, subtitle, description));\n" app-1 | 10:23:44.414 [info] execute "CREATE INDEX products_search_en_index ON products USING gin (mercator_product_document('english', 'en', title, subtitle, description));\n" app-1 | 10:23:44.415 [info] == Migrated 20261013130127 in 0.0s app-1 | 10:23:44.416 [info] == Running 20261013134902 Mercator.Repo.Migrations.AddConfigurableProducts.up/0 app-1 | 10:23:44.417 [info] create table option_choices app-1 | 10:23:44.418 [info] create index option_choices_unique_option_key_index app-1 | 10:23:44.418 [info] create table product_options app-1 | 10:23:44.419 [info] alter table option_choices app-1 | 10:23:44.420 [info] alter table product_options app-1 | 10:23:44.423 [info] create index product_options_unique_product_key_index app-1 | 10:23:44.423 [info] alter table products app-1 | 10:23:44.423 [info] == Migrated 20261013134902 in 0.0s app-1 | 10:23:44.426 [info] == Running 20261013142256 Mercator.Repo.Migrations.AddImages.up/0 app-1 | 10:23:44.426 [info] create table images app-1 | 10:23:44.428 [info] == Migrated 20261013142256 in 0.0s app-1 | 10:23:44.430 [info] == Running 20261013153325 Mercator.Repo.Migrations.AddBaskets.up/0 app-1 | 10:23:44.430 [info] create table basket_items app-1 | 10:23:44.431 [info] create table baskets app-1 | 10:23:44.432 [info] alter table basket_items app-1 | 10:23:44.433 [info] alter table baskets app-1 | 10:23:44.434 [info] create index baskets_unique_session_token_index app-1 | 10:23:44.435 [info] create index baskets_unique_user_index app-1 | 10:23:44.435 [info] == Migrated 20261013153325 in 0.0s app-1 | 10:23:44.437 [info] == Running 20261013154758 Mercator.Repo.Migrations.AddAddresses.up/0 app-1 | 10:23:44.437 [info] create table addresses app-1 | 10:23:44.438 [info] == Migrated 20261013154758 in 0.0s app-1 | 10:23:44.440 [info] == Running 20261013160145 Mercator.Repo.Migrations.AddGtcsAndInvoiceAllowed.up/0 app-1 | 10:23:44.440 [info] create table gtcs app-1 | 10:23:44.442 [info] create index gtcs_unique_version_index app-1 | 10:23:44.442 [info] alter table users app-1 | 10:23:44.442 [info] == Migrated 20261013160145 in 0.0s app-1 | 10:23:44.444 [info] == Running 20261013162220 Mercator.Repo.Migrations.AddOrders.up/0 app-1 | 10:23:44.445 [info] create table order_items app-1 | 10:23:44.446 [info] create table orders app-1 | 10:23:44.447 [info] alter table order_items app-1 | 10:23:44.448 [info] alter table orders app-1 | 10:23:44.450 [info] create index orders_unique_number_index app-1 | 10:23:44.451 [info] create index orders_unique_sequence_index app-1 | 10:23:44.451 [info] == Migrated 20261013162220 in 0.0s app-1 | 10:23:44.454 [info] == Running 20261013162221 Mercator.Repo.Migrations.AddOrderNumberCounters.change/0 forward app-1 | 10:23:44.454 [info] create table order_number_counters app-1 | 10:23:44.454 [info] == Migrated 20261013162221 in 0.0s app-1 | 10:23:44.457 [info] == Running 20261014063335 Mercator.Repo.Migrations.AddOrderEvents.up/0 app-1 | 10:23:44.457 [info] create table order_events app-1 | 10:23:44.459 [info] == Migrated 20261014063335 in 0.0s app-1 | 10:23:44.460 [info] == Running 20261014065334 Mercator.Repo.Migrations.OrderEventCustomerNotified.up/0 app-1 | 10:23:44.461 [info] alter table order_events app-1 | 10:23:44.461 [info] == Migrated 20261014065334 in 0.0s app-1 | 10:23:44.463 [info] == Running 20261014074859 Mercator.Repo.Migrations.AddPages.up/0 app-1 | 10:23:44.463 [info] create table pages app-1 | 10:23:44.465 [info] create index pages_unique_key_index app-1 | 10:23:44.466 [info] create index pages_unique_path_index app-1 | 10:23:44.466 [info] create table pages_versions app-1 | 10:23:44.468 [info] == Migrated 20261014074859 in 0.0s app-1 | 10:23:44.470 [info] == Running 20261014080826 Mercator.Repo.Migrations.AddAssets.up/0 app-1 | 10:23:44.470 [info] create table assets app-1 | 10:23:44.471 [info] create index assets_tags_index app-1 | 10:23:44.472 [info] == Migrated 20261014080826 in 0.0s app-1 | 10:23:44.474 [info] == Running 20261014082529 Mercator.Repo.Migrations.PageKind.up/0 app-1 | 10:23:44.474 [info] alter table pages app-1 | 10:23:44.474 [info] == Migrated 20261014082529 in 0.0s app-1 | 10:23:44.476 [info] == Running 20261014131013 Mercator.Repo.Migrations.AddSubmissions.up/0 app-1 | 10:23:44.476 [info] create table submissions app-1 | 10:23:44.478 [info] == Migrated 20261014131013 in 0.0s app-1 | 10:23:44.480 [info] == Running 20261014133046 Mercator.Repo.Migrations.PageIcon.up/0 app-1 | 10:23:44.480 [info] alter table pages app-1 | 10:23:44.480 [info] == Migrated 20261014133046 in 0.0s app-1 | 10:23:44.481 [info] == Running 20261014135346 Mercator.Repo.Migrations.PageRedirects.up/0 app-1 | 10:23:44.481 [info] create table page_redirects app-1 | 10:23:44.483 [info] create index page_redirects_unique_old_path_index app-1 | 10:23:44.483 [info] == Migrated 20261014135346 in 0.0s app-1 | 10:23:44.485 [info] == Running 20261014141123 Mercator.Repo.Migrations.AddConversations.up/0 app-1 | 10:23:44.486 [info] create table conversation_messages app-1 | 10:23:44.487 [info] create table conversations app-1 | 10:23:44.488 [info] alter table conversation_messages app-1 | 10:23:44.488 [info] alter table conversations app-1 | 10:23:44.491 [info] create index conversations_session_token_index app-1 | 10:23:44.491 [info] create index conversations_state_index app-1 | 10:23:44.492 [info] == Migrated 20261014141123 in 0.0s app-1 | 10:23:44.494 [info] == Running 20261014142236 Mercator.Repo.Migrations.ConversationCallback.up/0 app-1 | 10:23:44.494 [info] alter table conversations app-1 | 10:23:44.494 [info] == Migrated 20261014142236 in 0.0s app-1 | 10:23:44.497 [info] == Running 20261014143707 Mercator.Repo.Migrations.ConversationCurrentPage.up/0 app-1 | 10:23:44.497 [info] alter table conversations app-1 | 10:23:44.497 [info] == Migrated 20261014143707 in 0.0s app-1 | 10:23:44.499 [info] == Running 20261014144141 Mercator.Repo.Migrations.MessageAttachments.up/0 app-1 | 10:23:44.499 [info] alter table conversation_messages app-1 | 10:23:44.500 [info] == Migrated 20261014144141 in 0.0s app-1 | 10:23:44.502 [info] == Running 20261014155739 Mercator.Repo.Migrations.AddOfferNumberCounters.change/0 forward app-1 | 10:23:44.502 [info] create table offer_number_counters app-1 | 10:23:44.503 [info] == Migrated 20261014155739 in 0.0s app-1 | 10:23:44.505 [info] == Running 20261014160016 Mercator.Repo.Migrations.AddOffers.up/0 app-1 | 10:23:44.506 [info] create table offer_items app-1 | 10:23:44.507 [info] create table offers app-1 | 10:23:44.508 [info] alter table offer_items app-1 | 10:23:44.509 [info] alter table offers app-1 | 10:23:44.511 [info] create index offers_unique_version_index app-1 | 10:23:44.512 [info] alter table offers app-1 | 10:23:44.514 [info] create index offers_state_index app-1 | 10:23:44.514 [info] create index offers_customer_id_index app-1 | 10:23:44.515 [info] == Migrated 20261014160016 in 0.0s app-1 | 10:23:44.517 [info] == Running 20261014162423 Mercator.Repo.Migrations.ConversationClosedAt.up/0 app-1 | 10:23:44.517 [info] alter table conversations app-1 | 10:23:44.517 [info] create index conversations_customer_id_index app-1 | 10:23:44.518 [info] == Migrated 20261014162423 in 0.0s app-1 | 10:23:44.519 [info] == Running 20261014164226 Mercator.Repo.Migrations.OffersInChatAndOrders.up/0 app-1 | 10:23:44.520 [info] alter table conversation_messages app-1 | 10:23:44.520 [info] alter table offers app-1 | 10:23:44.521 [info] alter table order_items app-1 | 10:23:44.521 [info] alter table orders app-1 | 10:23:44.522 [info] == Migrated 20261014164226 in 0.0s app-1 | 10:23:44.524 [info] == Running 20261014164928 Mercator.Repo.Migrations.AssetLibraryFlag.up/0 app-1 | 10:23:44.524 [info] alter table assets app-1 | 10:23:44.524 [info] == Migrated 20261014164928 in 0.0s app-1 | 10:23:44.526 [info] == Running 20261014171040 Mercator.Repo.Migrations.ConversationRating.up/0 app-1 | 10:23:44.526 [info] alter table conversations app-1 | 10:23:44.526 [info] == Migrated 20261014171040 in 0.0s app-1 | 10:23:44.528 [info] == Running 20261015053826 Mercator.Repo.Migrations.AddIncidents.up/0 app-1 | 10:23:44.528 [info] create table incidents app-1 | 10:23:44.532 [info] create index incidents_state_index app-1 | 10:23:44.532 [info] create index incidents_fingerprint_index app-1 | 10:23:44.533 [info] == Migrated 20261015053826 in 0.0s app-1 | 10:23:44.534 [info] == Running 20261015062112 Mercator.Repo.Migrations.AddSettingsAndOnlinePayments.up/0 app-1 | 10:23:44.535 [info] create table settings app-1 | 10:23:44.536 [info] create index settings_unique_key_index app-1 | 10:23:44.536 [info] create table online_payments app-1 | 10:23:44.538 [info] create index online_payments_unique_provider_id_index app-1 | 10:23:44.538 [info] create index online_payments_order_id_index app-1 | 10:23:44.539 [info] == Migrated 20261015062112 in 0.0s app-1 | =ESOCK WARNING MSG==== 15-Oct-2026::10:23:44.606921 === app-1 | [UNIX-ESSIO] Failed open sctp dynamic library: libsctp.so.1 app-1 | 10:23:46.545 [info] Running MercatorWeb.Endpoint with Bandit 1.12.5 at :::4000 (http) app-1 | 10:23:46.547 [info] Access MercatorWeb.Endpoint at https://biber.mittenin.at app-1 | 10:23:46.556 [info] Demo mode: empty database, seeding the demo data app-1 | 10:23:55.376 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.377 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.379 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.380 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.381 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.388 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.390 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.391 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.503 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.508 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.508 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.510 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.511 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.516 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.516 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:23:55.518 [notice] TLS :client: In state :wait_cert_cr at ssl_handshake.erl:2332 generated CLIENT ALERT: Fatal - Handshake Failure app-1 | - {:bad_cert, :max_path_length_reached} app-1 | 10:24:16.088 [info] Demo mode: demo data seeded </pasted_content id="1f3a">

Claude · 10:25

Seeding worked: it started at 10:23:46 and finished at 10:24:16, so the demo data is there. The libsctp warning is expected, since the server still runs the image from before that fix.

The TLS lines are a real problem, though. During seeding, something opened outgoing TLS connections, about 16 of them, and rejected the server's certificate chain. That's most likely SMTP to mail.example.net. Looking at both questions: what seeding sends, and why the chain fails.

First the Sobelow skip: the TRUNCATE moved to another line, so its fingerprint changed and needs re-marking.

Adding a regression test: seeding must leave no jobs behind.

Good news on the remote console: it means the release itself is healthy inside the container.

I fixed both problems from the log and committed them as f560a50; precommit passes with 618 tests. Neither is pushed yet.

• TLS failure: gen_smtp, the SMTP library, rejects every certificate chain that has an intermediate certificate. Let's Encrypt chains always have one. config/runtime.exs now overrides that default.
• Emails during seeding: demo seeding now runs in one transaction. Oban can't pick up any emails before they're deleted, so the nightly reset won't email the demo addresses. If seeding fails, the old data stays, so you never get a half-seeded demo.
• No harm from the first start: all 16 emails failed at the TLS step, so nothing was sent. The demo data is complete; you don't need to reset or seed again.

To deploy: push here, then on the server git pull && docker compose build && docker compose up -d.

Router: check from the inside out to find which layer blocks. Run these on the server:

curl -sI http://127.0.0.1:4010/ | head -1                                           # 1. app
curl -skI --resolve biber.mittenin.at:443:127.0.0.1 https://biber.mittenin.at/ | head -1   # 2. proxy
dig +short A biber.mittenin.at; dig +short AAAA biber.mittenin.at; curl -4s ifconfig.me; echo; curl -6s ifconfig.me   # 3. DNS vs. public IP

Then test 4 from a phone on mobile data, with Wi-Fi off. Testing from inside your own network through the public name often fails even when outside access works.

Typical router causes:

• Ports: the port forwarding for the server needs ports 80 and 443. Caddy and certbot need port 80 to get the Let's Encrypt certificate.
• IPv6: if biber.mittenin.at has an AAAA record, the router needs a separate IPv6 opening for the server: under the device's sharing settings, enable the option to open the IPv6 firewall for it. IPv4 port forwarding alone doesn't cover IPv6. Browsers try IPv6 first and hang if it's blocked.
• DS-Lite: if curl -4 ifconfig.me shows a different address than the router's internet overview, or the router reports DS-Lite, you have no public IPv4 address. Then IPv4 port forwarding can't work at all; only IPv6 or a tunnel helps.

Paste the output of steps 1–3 and what the phone shows, and I'll narrow it down.

User · 10:32

aaaaahhh, I only opened 443!

Claude · 10:32

That's likely the cause. Without port 80, Let's Encrypt can't reach the server, so Caddy (or certbot) never gets a certificate, and HTTPS fails even with 443 open.

1. In the router: forward port 80/TCP to the server as well, the same way as 443. If biber.mittenin.at has an AAAA record, open 80 and 443 for IPv6 too.
2. Get the certificate:
   • Caddy retries on its own after a while. To speed it up, run sudo systemctl reload caddy and watch with journalctl -u caddy -f until it reports that the certificate was obtained.
   • With nginx and certbot, run sudo certbot --nginx -d biber.mittenin.at.
3. Test: open https://biber.mittenin.at on a phone over mobile data.

Keep port 80 open afterwards. Certificates are renewed about every 60 days through the same check, and Caddy also uses port 80 to redirect plain HTTP to HTTPS.

When the site loads, push the fixes and rebuild (git pull && docker compose build && docker compose up -d). Then send yourself a "forgot password" email with a non-demo account to test SMTP.

User · 10:34

you fixed it! opened http on router and firewall and tada!

Claude · 10:35

Great, the demo is live at https://biber.mittenin.at. And the firewall was the second blocker for port 80, good catch.

All my fixes are already on origin/main, up to f560a50. To get them onto the server:

cd ~/mercator && git pull && docker compose build && docker compose up -d

What that brings:

• TLS fix: SMTP verification now works with the Let's Encrypt certificate.
• Seeding fix: the nightly reset sends no emails.
• libsctp: the libsctp warning goes away.

The demo data you have stays, because the database is kept and seeding only runs on an empty one.

After the rebuild, a quick smoke test:

1. Sign in as admin@mittenin.at with DEMO_ADMIN_PASSWORD.
2. Request "forgot password" for an account that isn't a demo login, to test SMTP. If it fails, docker compose logs app | grep -i tls shows why, and it will also show up under Verwaltung → Vorfälle.
3. Download an offer PDF, to test Typst.
4. Place an order paid online with the simulator.

After that comes phase 7 step 3, Mollie with real webhooks. For that I need you to create a Mollie account and put the test API key (test_…) in .env as MOLLIE_API_KEY. Tell me when you have it.

User · 10:36

so you don't have to docker compose down -v in between?

Claude · 10:36

No, and please don't run down -v. The -v deletes the volumes, which here means the database (db_data) and the uploads (uploads). You'd lose all the demo data and photos.

Plain docker compose up -d after a build is enough:

• Compose sees the new image, stops the old app container and starts a new one. The db container keeps running.
• The volumes stay. The new container finds the existing database and runs any new migrations on start; there are none this time.
• Demo mode doesn't seed again, because the database already has users.

When to use what:

• Normal update: git pull && docker compose build && docker compose up -d.
• Fresh demo data, but keep everything else: docker compose exec app bin/mercator rpc "Mercator.Demo.reset()".
• Start completely from scratch: docker compose down -v. This deletes the database and uploads, so the next up -d seeds again from an empty database. You'd only need this if something were badly broken.

User · 10:41

i am impressed:

<pasted_content id="1f3a"> user@server:~/mercator$ docker compose logs -f app app-1 | 10:40:38.117 [info] Migrations already up app-1 | 10:40:40.174 [info] Running MercatorWeb.Endpoint with Bandit 1.12.5 at :::4000 (http) app-1 | 10:40:40.176 [info] Access MercatorWeb.Endpoint at https://biber.mittenin.at </pasted_content id="1f3a">

Claude · 10:41

That start is clean:

• No libsctp warning: the new image is running.
• "Migrations already up": your database came through the update untouched.
• No "Demo mode: seeding" line: that's expected, because the database already has users.

The TLS fix only shows up once an email goes out, so the SMTP test is next:

1. Use an address of yours that isn't a demo login. If you don't have an account with one yet, register it on /register, which sends the confirmation email. Or use "forgot password" with an existing one.
2. Keep docker compose logs -f app open while you do it. Success means no TLS … Handshake Failure line and the email arrives.
3. If it fails, the error shows up in the log and, after the retries, under Verwaltung → Vorfälle.

Then the PDF of an offer and an order paid with the simulator, and the smoke test is done.

User · 10:43

<pasted_content id="1f3a"> app-1 | 10:40:38.117 [info] Migrations already up app-1 | 10:40:40.174 [info] Running MercatorWeb.Endpoint with Bandit 1.12.5 at :::4000 (http) app-1 | 10:40:40.176 [info] Access MercatorWeb.Endpoint at https://biber.mittenin.at app-1 | 10:41:56.207 request_id=GN6t6JZsLvuLcOsAAAAD [info] GET / app-1 | 10:41:56.267 request_id=GN6t6JZsLvuLcOsAAAAD [info] Sent 200 in 59ms app-1 | 10:42:04.690 request_id=GN6t6pADcZSLcOsAAADD [info] GET / app-1 | 10:42:04.740 request_id=GN6t6pADcZSLcOsAAADD [info] Sent 200 in 50ms app-1 | 10:42:05.139 [info] CONNECTED TO Phoenix.LiveView.Socket in 55µs app-1 | Transport: :websocket app-1 | Serializer: Phoenix.Socket.V2.JSONSerializer app-1 | Parameters: %{"_csrf_token" => "[FILTERED]", "_live_referer" => "undefined", "_mount_attempts" => "0", "_mounts" => "0", "_track_static" => %{"0" => "https://biber.mittenin.at/assets/css/app-1d86fcd4dc5c7091cc7e062dca5eb077.css?vsn=d", "1" => "https://biber.mittenin.at/assets/js/app-0fe7c169076a8b486789d7a412839632.js?vsn=d"}, "vsn" => "2.0.0"} app-1 | 10:42:09.875 [warning] navigate event to "https://biber.mittenin.at/register" failed because you are redirecting across live_sessions. A full page reload will be performed instead app-1 | 10:42:09.959 request_id=GN6t68oXwHaLcOsAAAED [info] GET /register app-1 | 10:42:10.005 request_id=GN6t68oXwHaLcOsAAAED [info] Sent 200 in 45ms app-1 | 10:42:10.301 request_id=GN6t695yq5OLcOsAAAGD [info] GET /brand/logo app-1 | 10:42:10.301 request_id=GN6t695yq5OLcOsAAAGD [info] Sent 302 in 393µs app-1 | 10:42:10.329 [info] CONNECTED TO Phoenix.LiveView.Socket in 58µs app-1 | Transport: :websocket app-1 | Serializer: Phoenix.Socket.V2.JSONSerializer app-1 | Parameters: %{"_csrf_token" => "[FILTERED]", "_live_referer" => "undefined", "_mount_attempts" => "0", "_mounts" => "0", "_track_static" => %{"0" => "https://biber.mittenin.at/assets/css/app-1d86fcd4dc5c7091cc7e062dca5eb077.css?vsn=d", "1" => "https://biber.mittenin.at/assets/js/app-0fe7c169076a8b486789d7a412839632.js?vsn=d"}, "vsn" => "2.0.0"} app-1 | 10:43:01.664 [error] GenServer #PID<0.6418.0> terminating app-1 | ** (Ash.Error.Unknown) app-1 | Bread Crumbs: app-1 | > Exception raised in: Mercator.Accounts.User.register_with_password app-1 | app-1 | Unknown Error app-1 | app-1 | * ** (Swoosh.DeliveryError) delivery error: {:send, {:permanent_failure, ~c"mail.example.net", "553 5.7.1 robot@example.com: Sender address rejected: not owned by user robot@mittenin.at\r\n"}} app-1 | (mercator 0.1.0) lib/mercator/mailer.ex:7: Mercator.Mailer.deliver!/2 app-1 | (ash_authentication 4.15.0) lib/ash_authentication/add_ons/confirmation/confirmation_hook_change.ex:341: anonymous fn/5 in AshAuthentication.AddOn.Confirmation.ConfirmationHookChange.maybe_perform_confirmation/4 app-1 | (ash 3.34.6) lib/ash/data_layer/data_layer.ex:630: anonymous fn/3 in Ash.DataLayer.transaction/5 app-1 | (mercator 0.1.0) lib/mercator/mailer.ex:7: Mercator.Mailer.deliver!/2 app-1 | (ash_authentication 4.15.0) lib/ash_authentication/add_ons/confirmation/confirmation_hook_change.ex:341: anonymous fn/5 in AshAuthentication.AddOn.Confirmation.ConfirmationHookChange.maybe_perform_confirmation/4 app-1 | (ash 3.34.6) lib/ash/changeset/changeset.ex:5340: anonymous fn/2 in Ash.Changeset.run_after_actions/3 app-1 | (elixir 1.20.4) lib/enum.ex:5119: Enumerable.List.reduce/3 app-1 | (elixir 1.20.4) lib/enum.ex:2676: Enum.reduce_while/3 app-1 | (ash 3.34.6) lib/ash/changeset/changeset.ex:5315: Ash.Changeset.run_after_actions/3 app-1 | (ash 3.34.6) lib/ash/changeset/changeset.ex:4785: anonymous fn/3 in Ash.Changeset.with_hooks/3 app-1 | (ash 3.34.6) lib/ash/data_layer/data_layer.ex:630: anonymous fn/3 in Ash.DataLayer.transaction/5 app-1 | Process Label: {Phoenix.LiveView, MercatorWeb.SignInLive, "lv:phx-GN6t68yQ7zpw6wFD"} app-1 | Last message: %Phoenix.Socket.Message{topic: "lv:phx-GN6t68yQ7zpw6wFD", event: "event", payload: %{"cid" => 7, "event" => "submit", "meta" => %{}, "type" => "form", "value" => "[FILTERED]"}, ref: "36", join_ref: "4"} </pasted_content id="1f3a">

there is still the robor@example.com address somewhere in...

Claude · 10:44

It's not in the codebase. The only place the app takes the sender from is the MAIL_FROM_ADDRESS environment variable, through config/runtime.exs and docker-compose.yml. The old address appears nowhere else in the code or config; the only remaining "example" mentions are in the docs and refer to the old Rails customer. The error message also tells us the situation: the server logged in as robot@mittenin.at, so SMTP_USERNAME is right, but the sender is still robot@example.com.

So on the server, either .env still has the old MAIL_FROM_ADDRESS, or a shell variable overrides it. Compose prefers variables from the shell over .env.

grep -n example .env                            # still in .env?
echo "$MAIL_FROM_ADDRESS"                          # exported in your shell (e.g. ~/.bashrc)?
docker compose exec app printenv MAIL_FROM_ADDRESS # what the container actually got

After fixing it, run docker compose up -d. Compose recreates the container when the environment changes, with no build needed. Then try registering again.

The log also shows a bug of ours. The sign-in emails (confirmation, password reset, magic link) are sent directly inside the registration. When SMTP fails, the registration is rolled back and the page crashes, and no incident is recorded. All other emails go through Oban, with retries and an incident at the end (#105).

#120: shall I send these three emails through Oban jobs as well? Registration would then always succeed, and SMTP failures would show up under Vorfälle. One downside: the job keeps the sign-in link with its token in the job table until it's cleaned up, at most a day later. To avoid that, the job could store only the user ID, but then it has to generate a fresh link when it sends. Which do you prefer? Or should I keep direct sending and just catch the error, showing a message and recording an incident?

User · 10:45

I only changed SMTP_USERNAME, my bad, now I have changed .env, which steps are necessary?

Claude · 10:45

One step:

docker compose up -d

Compose notices that MAIL_FROM_ADDRESS changed and recreates only the app container. The database and uploads stay. You don't need a build, because only the environment changed, not the code.

To confirm it took effect:

docker compose exec app printenv MAIL_FROM_ADDRESS   # should print robot@mittenin.at

Then try registering again. The failed attempt was rolled back completely, so you can use the same email address.

I'm leaving #120 open until you decide. For now, a failed email still crashes the registration page.

User · 10:47

got the confirmation mail, link worked, confirmation button worked -> confirmed!

Claude · 10:47

SMTP works end to end, so the TLS fix is confirmed on the real server. I'll record #120 as an open question in the roadmap so it doesn't get lost.

Going with (b). Before writing it, I'm checking how AshAuthentication handles a sender's return value, to see whether a message can reach the page:

Implementing it now: a delivery helper in the mailer that records an incident instead of raising, used by the three sign-in senders.

Now a test. It uses a mailer adapter that always fails, set globally, so the test module runs synchronously:

All three pass. I'll silence the expected error logs in that test and add the German texts:

User · 10:57

sorry, mis-clicked: yes!

Claude · 10:58

Translations are in. Now I'm recording the #120 decision in the roadmap, then running precommit:

#120 (b) is done and committed as 4e32437; precommit passes with 621 tests. It isn't pushed yet.

• What changed: the three sign-in emails (confirmation, password reset, sign-in link) are still sent directly. If delivery fails, the action still goes through, the error is logged, and an incident appears under Verwaltung → Vorfälle. The incident is in German, e.g. "Bestätigungs-E-Mail konnte nicht gesendet werden", says which address the email didn't reach and the reason, and links the user when there is one. A registration like your failed one now succeeds, and the page doesn't crash.
• What isn't possible: an error message on the sign-in page. AshAuthentication ignores whatever an email sender returns, so the page can't learn that sending failed. The person sees the normal confirmation and can request a new email later. Staff find out through the incident.
• Tests: three new ones with a mail adapter that always fails, covering registration, password reset and sign-in link.
• Docs: #120 is recorded as a decision in roadmap-history.md, and the open questions in the roadmap are empty again.

To get it onto the server: push here, then git pull && docker compose build && docker compose up -d there. The data stays.

Still open from the smoke test: an offer PDF and an order paid with the simulator.

User · 11:04

redeployed ... successfully paid an order ...

Claude · 11:04

Excellent. Payment worked on the live server: checkout, the simulator page and the return to the order.

One smoke test check is left, the PDF. Open an offer, for example in the back office as manager@mittenin.at, and click "PDF herunterladen". This checks that Typst and the fonts work inside the image. If it fails, the reason is in docker compose logs app and under Vorfälle.

Once that works, phase 8 is complete and the next step is Mollie (phase 7 step 3). You'd create a Mollie account and put the test API key (test_…) in .env as MOLLIE_API_KEY. I'll build the adapter meanwhile, and we test it against the real webhooks on biber.mittenin.at. If you'd rather pause here, I'll export the session log first, as usual.

User · 11:07

went through the full advice process - question - product recommendation - offer - picking it up from advice widget - inspect it - print it. all worked flawlessly

Claude · 11:07

That covers the whole guided-selling chain on the live server, including the real-time parts over the WebSocket through the proxy.

One small gap: "print" is probably the print page (the browser's own print). The Typst PDF is the separate "PDF herunterladen" button next to it, and that's the one that needs Typst and the fonts in the image. If you haven't clicked it yet, please try it once. I'm marking phase 8 as done in the roadmap:

The PDF works, so Typst and the fonts in the image are confirmed. The download behaviour comes from how the server sends the file; checking:

Good news: the PDF works, so Typst and the fonts in the image are confirmed and the smoke test is complete. Phase 8 is now marked done in the roadmap (3006e2a), with the PDF check still listed as open; I'll tick it off with whatever change we make for the download.

The download is how the app sends the file. Both PDF links (offer and order confirmation) send it as an attachment (disposition: :attachment). Firefox's default for attachments is to save straight to the Downloads folder without asking. Whether it asks is a Firefox setting: Settings → General → Files and Applications → "Always ask you where to save files".

We could change that in the app instead. With disposition: :inline, the PDF opens in the browser's own viewer (Firefox, Chrome and Edge all have one). People see the document first and can still save or print it from there, and the file name stays the same. On phones, some browsers download it anyway; that's fine.

Shall I switch both PDF links to open in the browser? Open in a new tab, so the shop page stays open? It's a two-line change plus tests.

User · 11:09

you have to look up to the download button to see it

Claude · 11:09

That's the problem: the file lands silently in Downloads, and nothing on the page shows it happened. Opening it in a new tab fixes that. Finding the links and controllers:

Adding assertions that the PDF responses carry no CSP header:

Tests pass. Now the German label: "Open PDF" becomes "PDF öffnen".

The fuzzy matcher guessed "Offen" for German, which is wrong; fixing it:

PDFs now open in a new tab in the browser's own PDF viewer, instead of landing silently in Downloads. You see the document right away and can save or print it from the viewer. The file name stays the same. Committed as 5672be7; precommit passes. It isn't pushed yet.

• Where: the offer PDF (customer page and back office) and the order confirmation (account and back office).
• Label: the offer links now read "PDF öffnen" with a document icon, since nothing is downloaded anymore. The order links keep "Auftragsbestätigung (PDF)".
• Security header: PDF responses no longer carry the shop's Content-Security-Policy. It could block the browser's built-in viewer and has no meaning for a PDF. The tests check both the inline delivery and the missing header.
• Roadmap: the PDF check is ticked off, so the phase 8 smoke test is complete.

The tests check the headers, but not how Firefox actually behaves. Please try it once after the next deploy (git pull && docker compose build && docker compose up -d).

Next is Mollie, once you have the test API key. Or tell me if you'd rather wrap up the session; then I'll export the session log first.

User · 11:12

this is perfect wrap. save your memory.

Claude · 11:13

Rewriting the status memory as a compact resume point:

Before committing the session log, I'm checking it for credentials:

No credentials in it; the only password shown is the public demo one. Committing:

Memory is saved and the session is wrapped up.

• Memory: the resume point now says:
  • The demo is live at biber.mittenin.at and the phase 8 smoke test passed.
  • Next is phase 7 step 3, Mollie with real webhooks against the live domain.
  • It also notes this session's gotchas: ports 80 and 443 on the router and firewall, the SMTP certificate check, sign-in emails, and never suggesting down -v.
  • The next open question number is #121.
• Session log: exported to docs/sessions/2026-10-15-fafce14e.md and committed as 7ca6fce. I checked it for credentials; the only password in it is the public mercator-demo. That commit is the only one not pushed yet. The PDF change (5672be7) is already on origin/main.

On the server, git pull && docker compose build && docker compose up -d brings the PDFs that open in a new tab. Check that once in Firefox.

For next time: create a Mollie account and put the test key (test_…) in the server's .env as MOLLIE_API_KEY.

User · 11:23

please add a metrics.md, where we put in metadata of this project: loc, commits, number of models, number of tests, whatever comes to your mind

Claude · 11:23

Gathering the numbers first: code size, git history, Ash structure, tests and translations.

The dev server is down, so I'll do the Ash introspection with mix run --no-start instead; that makes the numbers scriptable anyway. Fixing the shell glob too:

Okay, I'm pausing. I've gathered part of the numbers so far (219 commits, about 33,500 lines in lib, 608 tests plus 13 doctests) and haven't written anything to disk yet. Tell me when to go on, or if you want something different.

User · 11:24

dev server running

Claude · 11:25

Now the Rails original, for comparison:

I have everything. Writing docs/metrics.md as a dated snapshot, with the commands at the end so it can be refreshed later.

Correcting two numbers: the .pot counts include each file's header entry, and I counted the Rails DRYML twice, since it's already part of app/views.

The session logs come from the raw transcripts, which have a timestamp on every message. Checking what's available:

There are 5 sessions; my "6" also counted the folder's README. Fixing that too. Calculating both the wall-clock span and the active time from the message timestamps:

Five sessions: 23 h 10 min wall clock, of which 16 h 37 min active. "Active" leaves out pauses longer than 15 minutes between messages, such as lunch. Adding a sessions table to the metrics:

I guessed the topics of the earlier sessions, so I'm checking them against the commits of their session logs:

I added docs/metrics.md with the project numbers and a table of the work sessions. Committed as 52661e1 and 30aa386; neither is pushed yet. The headline numbers:

Working time	16 h 37 min active, 23 h 10 min from first to last message
Work sessions	5
Commits	219 over 3 days
Code in lib/	33,463 lines
Test code	10,192 lines
Tests	608 + 13 doctests
Ash resources / actions	34 / 199
LiveViews	45 (26 in the admin area)
Routes	73
Demo catalogue	90 products, 136 variants, 130 images

The file also covers code size by area, structure (state machines, policies, Oban workers), translations, demo data and a comparison with the Rails original. For example: 53 models there, 34 resources here; 1,947 commits over 4 years there, 219 over 3 days here.

The session times come from the timestamps in the raw transcripts, which is the only place they're recorded. "Active" leaves out pauses longer than 15 minutes between messages. That matters most on 10-14: the session ran from 08:15 to 19:30, but only 6 hours count as active. The method is written up at the end of the file, so the numbers can be refreshed later.

I corrected one count from my first draft: there are 5 sessions, not 6. I had also counted the README in docs/sessions/. Today's session, and therefore its durations, ends with this metrics work.

User · 11:30

i have one more project phase: documentation: while we already have most of the stuff, we will put it into the admin area of the shop as well.

Claude · 11:31

I'll add this as phase 9. Some decisions shape the design, so I'll ask them first and then record the answers in the roadmap.

Thanks. #122–#124 are clear: Markdown in the repo, German and English, and a help section with context links on the admin pages.

#121 needs one clarification. You picked customers, developers, operators and "Other", but I don't see what you wrote under "Other". The staff manuals per role (sales, content, products, administration) weren't selected. Is that what "Other" stands for, or something else?

Also, about customers: help for shop visitors (ordering, account, chat) can't be reached in the admin area, because customers can't sign in there. Do you want it in the repo docs too, shown in the shop under a help link, for example? Or was "customers" meant as a manual for the shop owner, the client who runs the shop?

User · 11:33

I was thinking customers as client running the shop. But you are completely right. Not everything might be self explanatory for customers within the shop frontend.

Claude · 11:33

So the audiences are:

• The shop owner and their staff: the back office manual, per role.
• Operators.
• Developers.
• Shop visitors: help in the shop itself.

Recording phase 9 with these decisions in the roadmap:

Phase 9 is in the roadmap, committed as b85f855; not pushed yet.

Decided (recorded as decisions in roadmap-history.md):

• #121, who it's for:
  • The shop owner and their staff: a back office manual by role (administration, sales, sales management, content, products).
  • Operators.
  • Developers.
  • Shop visitors.
• #122, where it lives: Markdown files in the repo, under priv/docs/de/… and priv/docs/en/…. They're versioned with the code, so the help always matches the deployed version, and they're the same for every customer.
• #123, languages: German and English, German first, with German shown when a page isn't translated yet.
• #124, in the admin area: a "Hilfe" entry in the sidebar with a table of contents and search, plus a "?" on each admin page that opens the matching chapter. Each user sees the chapters for their roles.

For content, we can reuse README.md, DOCKER.md, the design docs and the German Rails wiki, which has the sales-process diagram.

#125 is still open, in two parts:

1. Help for shop visitors:
   • My proposal is general help from the repo at a shop route like /help, covering ordering, account, payment, and chat and offers. It would be linked from the footer, the checkout and the chat.
   • Customer-specific content, such as delivery areas, FAQ and terms, stays in the CMS, where the shop owner can edit it.
   • Does that split work for you?
2. Operator and developer chapters: should only administrators see them? Sales staff probably don't need Docker instructions. I'd say yes.

In the roadmap, phase 9 comes after Mollie (phase 7 step 3). If you'd rather start with the documentation while you set up the Mollie account, that works too.

User · 11:36

#125 1 -> yes, and 2 -> yes

Claude · 11:37

I've recorded #125 as decided, so all of phase 9 (#121–#125) is settled. Committed as a4809c6, not pushed yet.

• Shop help: the general help for visitors comes from the repo and lives at /help. It covers ordering, account, payment, and chat and offers, and is linked from the footer, the checkout and the chat. Customer-specific content (delivery areas, FAQ, terms) stays in the CMS.
• Admin area: the operator and developer chapters are visible to administrators only. Each staff member sees the manual chapters for their own roles.

The open questions list in the roadmap is empty again, and the next question number is #126.

The order is unchanged: Mollie (phase 7 step 3) next, once you have the test key, then phase 9.

User · 13:38

(not so) fun fact: i cannot log in any more, as spam bots bring us into the rate limiting. i'm afraid, we need a different approach.

Claude · 13:38

Both sign-in paths can carry the client IP. The sign-in page passes a context to the forms, and the direct form POST to /auth/… reads its context from the connection. So the fix is feasible.

Immediate relief: the counters live only in memory, so a restart clears them:

docker compose restart app

The bots will be back, so this only buys time.

#126 proposal: count per address and client IP instead of per address alone.

Limit	Today	Proposed
Sign-in attempts	10 per 15 min per email	10 per 15 min per email + IP, plus 30 per 15 min per IP across all emails
Reset / sign-in link emails	3 per 15 min per email	3 per 15 min per email + IP, plus 10 per hour per email in total (protects the mailbox from many IPs)

• Effect: a bot only locks out itself, from its own IP. You can still sign in from yours. A bot that tries many addresses hits the per-IP limit. Guessing a password stays hopeless either way, because of bcrypt and the 10 attempts.
• Implementation:
  • The IP comes from the existing MercatorWeb.ClientIp, which already believes X-Forwarded-For only from TRUSTED_PROXIES.
  • It's passed in the Ash context through MercatorWeb.SignInLive and a plug for the /auth routes.
  • Every time a limit is hit, an incident is recorded with the IP, so you can see attacks under Vorfälle.
• Optional, outside the app: a limit per IP at the reverse proxy for /sign-in and /auth/…, which the README already recommends. With Caddy that needs a plugin; with nginx it's built in (limit_req). Or fail2ban on the server.

One question about the incidents: under a sustained bot attack there could be many of them. The incident module already counts repeats with the same fingerprint into one open incident instead of creating new ones. I'd use one fingerprint per IP, so an attacker shows up as one incident with a counter.

Shall I implement it this way? If you have docker compose logs app | grep -E "POST|sign_in" | tail -30 from the server, it would show whether the bots post directly to /auth/… or go through the page, but the fix covers both.

User · 13:39

oh - then why can't I login any more due to rate limiting?

Claude · 13:39

Because today's limit counts the attempts for an email address, no matter who makes them. All attempts at signing in as, say, admin@mittenin.at go into one shared counter of 10 per 15 minutes. When bots use up those 10 with wrong passwords, the address is blocked for everyone for the rest of the window, including you with the right password. Your attempts land in the same counter as theirs, so the app can't tell you apart.

Which addresses are exposed:

• The public demo logins: they're listed on the sign-in page, so bots read them there.
• admin@mittenin.at: not listed, but easy to guess from the others.

And since bots keep retrying, the window keeps refilling, so the block never really ends.

That's the weakness the proposal fixes. With a separate counter per address and IP, the bots exhaust only their own counters, and yours stays untouched.

Before the IP-based limits go live, I'd confirm on the server that the app sees the real client IPs and not just the proxy's address. Otherwise all visitors would share one counter again. I'd show the resolved IP in the incident and check it with you once.

User · 13:41

let's try #126 and go from there

Claude · 13:41

I'll implement #126. First I'm checking how the auth components pass context through, including the reset and magic-link forms:

All three forms pass the context through, and a direct POST picks it up from the connection. Now the code. First the rate-limit buckets:

Now the preparation itself. It checks the IP-keyed buckets and records an incident when one is exceeded:

Now the IP plumbing: a plug for the /auth routes, and the context in SignInLive.

Compiles. Now the tests: a bot's IP must not lock out the owner, the per-IP limit must catch address spraying, and incidents must count up per IP.

The domain-level tests pass. Now the web side: the plug, plus a LiveView test that the sign-in form really counts per IP.

After a successful submit the LiveView process ends. Checking what render_submit returns in both cases, to assert on that instead:

Success redirects to the token sign-in, while a blocked attempt stays on the page with the error. Writing the final assertions:

Translations done. Updating the README's rate-limit section and the roadmap:

Precommit passes with 628 tests. The output shows an Ash warning about missed notifications, though. Checking whether it comes from the new code:

I don't doubt your network; NAT has nothing to do with it. The reason is the reverse proxy:

• What the app sees: the visitor's connection ends at Caddy. Caddy then opens its own connection to the app on 127.0.0.1:4010. Docker passes that on into the container, where it arrives from Docker's gateway address (172.x). So the app never sees the visitor's IP on the connection itself; every request seems to come from the proxy.
• Where the real IP is: Caddy puts it in the X-Forwarded-For header. The app believes that header only if the connection comes from an address in TRUSTED_PROXIES. Otherwise anyone could fake their IP with that header.
• When it's right: the default for TRUSTED_PROXIES is Docker's networks (172.16.0.0/12), which fits your setup. If .env sets it to something else, say 127.0.0.1, the app would ignore the header and treat every visitor as 172.x. Then all visitors would share one counter, and bots could lock everyone out again.

So it's only a config check. It's easy to confirm after the deploy: the first rate-limit incident under Vorfälle shows the resolved IP. A public address means it's right; a 172.x address means TRUSTED_PROXIES needs fixing.

#126 is implemented, committed as 017ec72; precommit passes with 628 tests.

• Sign-ins: 10 per 15 minutes per address and IP, plus 30 per 15 minutes per IP for all addresses.
• Reset and sign-in-link emails: 3 per 15 minutes per address and IP, plus 10 per hour per address in total.
• Incidents: every limit reached becomes an incident with the IP, one per IP, which counts up instead of piling up.

To deploy: push here, then on the server git pull && docker compose build && docker compose up -d. The restart also clears the old counters, so you can sign in right away.

User · 13:53

no, I cannot login after the redeploy

Claude · 13:53

Checking first whether the new code is on the server at all; I haven't pushed anything myself:

The commit is pushed, so the server probably runs the new code. Let's look at what happens there. Please run these on the server:

git log --oneline -1                                  # should be 017ec72
docker compose exec app printenv TRUSTED_PROXIES      # empty = default 172.16.0.0/12
docker compose exec app bin/mercator rpc 'Mercator.Operations.Incident |> Ash.read!(authorize?: false) |> Enum.map(&{&1.title, &1.occurrences, &1.details}) |> IO.inspect(limit: :infinity)'

The last one lists the incidents without needing a sign-in. Each rate-limit incident shows the client IP the app resolved:

• Many different public IPs: the IPs are resolved correctly. Then your own block has another cause, and the exact message on the sign-in page tells me which. "Zu viele Versuche" is the rate limit; "Anmeldung fehlgeschlagen" means wrong address or password.
• One 172.x address, or your own IP: that's the misresolution I described. Everyone shares one counter, and the bots use it up.

Which account are you signing in with, and what does the page say? With those answers I can narrow it down.

User · 13:53

<pasted_content id="1f3a"> user@server:~/mercator$ git log --oneline -1 # should be 017ec72 docker compose exec app printenv TRUSTED_PROXIES # empty = default 172.16.0.0/12 docker compose exec app bin/mercator rpc 'Mercator.Operations.Incident |> Ash.read!(authorize?: false) |> Enum.map(&{&1.title, &1.occurrences, &1.details}) |> IO.inspect(limit: :infinity)' 017ec72 (HEAD -> main, origin/main, origin/HEAD) Rate limits per client IP (#126): bots no longer lock out accounts 172.16.0.0/12 [ {"Limit erreicht: Anmelde-E-Mails von ::ffff:172.20.0.1", 1, "bucket auth_email, client IP ::ffff:172.20.0.1"}, {"Limit erreicht: Anmeldeversuche von ::ffff:172.20.0.1", 1, "bucket sign_in, client IP ::ffff:172.20.0.1"} ] </pasted_content id="1f3a">

Claude · 13:54

That's the bug: the app sees the proxy as ::ffff:172.20.0.1. That's the IPv4 address 172.20.0.1 written in IPv6 form, because the app listens on IPv6 (:::4000) and the system hands it IPv4 connections like that. The check against TRUSTED_PROXIES (172.16.0.0/12) compares IPv4 ranges and doesn't recognize the IPv6 form. So the proxy isn't trusted, the app ignores X-Forwarded-For, and every visitor, you and the bots alike, appears as the same IP.

This bug existed before #126 too: the contact-form limit had the same problem. The fix is to convert such addresses back to plain IPv4. Looking at the resolver:

I'll fix it in resolve/2: convert IPv4-mapped IPv6 addresses to plain IPv4, both for the connection and for addresses in the header. Adding doctests for the case from your server:

Adding a test for exactly the server's situation: the Docker gateway in IPv6 form, with TRUSTED_PROXIES set to the Docker networks.

No, the Caddyfile is fine as it is. Caddy's reverse_proxy already puts the visitor's IP in X-Forwarded-For, and it ignores any such header a client sends along, so bots can't fake their IP. The problem was only in the app, which didn't recognize the proxy's address in its IPv6 form.

The fix is committed as e0bcba9; precommit passes with 632 tests. It isn't pushed yet. The app now treats addresses like ::ffff:172.20.0.1 as plain IPv4 (172.20.0.1), so it trusts the Docker gateway and takes the client IP from X-Forwarded-For again. A test reproduces your server's exact situation.

To deploy: push, then on the server git pull && docker compose build && docker compose up -d. The restart also clears the counters, so you can sign in right away.

To confirm afterwards, close the two old incidents under Vorfälle. New rate-limit incidents should then show public bot addresses, not 172.20.0.1. You can also check it yourself: 11 wrong sign-ins from your phone should create an incident with your phone's IP, while you can still sign in from your PC.

This bug wasn't new. The contact-form limit, which also counts per IP, had the same problem since the first deployment, so all visitors shared one counter there too. The fix covers both.

User · 13:58

still: too many attempts, please try again later

Claude · 13:58

Checking first whether the fix even reached the server; I committed it but didn't push:

The fix is on origin/main. So either the server isn't running it yet, or the app still resolves a wrong IP. The incidents will show which:

git log --oneline -1                     # should be e0bcba9
docker compose ps app                    # CREATED should be after the pull
docker compose exec app bin/mercator rpc 'Mercator.Operations.Incident |> Ash.read!(authorize?: false) |> Enum.sort_by(& &1.updated_at, DateTime) |> Enum.map(&{&1.updated_at, &1.state, &1.occurrences, &1.details}) |> IO.inspect(limit: :infinity)'

What I'm looking for in the last command:

• A new incident with client IP ::ffff:172.20.0.1 or 172.20.0.1: the app still doesn't see the real IP. Then I need to see what Caddy actually sends.
• Incidents with public IPs, one of them yours: the IPs are right, and your own attempts used up your own counter. That would mean 10 wrong attempts from your IP, or 30 sign-ins from your IP in total. Both can happen when a password manager fills in an old password, for example.
• No new incident at all: the message came from a limit counted without an IP. That would point to a sign-in path where the IP doesn't arrive.

Also, which page were you on: /sign-in or the sign-in at checkout? And which account?

User · 13:59

<pasted_content id="1f3a"> user@server:~/mercator$ git log --oneline -1 # should be e0bcba9 docker compose ps app # CREATED should be after the pull docker compose exec app bin/mercator rpc 'Mercator.Operations.Incident |> Ash.read!(authorize?: false) |> Enum.sort_by(& &1.updated_at, DateTime) |> Enum.map(&{&1.updated_at, &1.state, &1.occurrences, &1.details}) |> IO.inspect(limit: :infinity)' e0bcba9 (HEAD -> main, origin/main, origin/HEAD) ClientIp: treat IPv4-mapped IPv6 addresses as IPv4 NAME IMAGE COMMAND SERVICE CREATED STATUS PORTS mercator-app-1 mercator-app "/app/entrypoint.sh …" app About a minute ago Up About a minute 127.0.0.1:4010->4000/tcp [ {~U[2026-10-15 13:52:16.273009Z], :open, 1, "bucket auth_email, client IP ::ffff:172.20.0.1"}, {~U[2026-10-15 13:52:45.718139Z], :open, 1, "bucket sign_in, client IP ::ffff:172.20.0.1"}, {~U[2026-10-15 13:57:45.377361Z], :open, 1, "bucket auth_email, client IP 203.0.113.42"}, {~U[2026-10-15 13:58:05.682149Z], :open, 1, "bucket sign_in, client IP 203.0.113.42"} </pasted_content id="1f3a">

Claude · 13:59

The IP fix works: the app now sees 203.0.113.42 instead of the proxy. Is that your own IP? The timing suggests so: the limit was reached within a minute of the restart. If so, you used up your own counter, and I suspect the cause.

The sign-in forms validate on every input (phx-change, debounced to 350 ms). For a read action like sign-in, validating also builds the query, and that runs the rate-limit preparation, so typing would count as attempts. That would also explain the email limit: the sign-in-link form counts while you type an address. Checking it with a test:

Both have before_action. Checking what the hooks may return, so a denied attempt stops the action:

Errors added inside a hook stop the action. Moving the check into a before_action hook:

Found it: the limit counted your typing. The sign-in form checks its input as you type, and each check counted as a sign-in attempt. Typing an email and a password reached 10 "attempts" within seconds. The sign-in-link form did the same for its 3 emails per 15 minutes, and both forms are on /sign-in. That's why your IP (203.0.113.42) was blocked about a minute after the restart.

• Fix: the limits now count only submitted attempts, not typing. Committed as c2f6c38; precommit passes with 633 tests. It isn't pushed yet. A new test types 12 times in the password field and 5 times in the email field, then checks that nothing was counted and that signing in still works.
• Not new: the old limit per address (#87) had the same flaw. So the earlier lockouts were most likely your own typing too, not bots, or at least not only bots. The incidents so far show only your IP and the proxy address, no bot addresses.

To deploy: push, then on the server git pull && docker compose build && docker compose up -d. The restart clears your current block, and you can sign in normally after that. Without a restart, the block lifts on its own 15 minutes after your last attempt.

The IP fix from before (e0bcba9) is confirmed: the incidents show your real IP, not the proxy's. You can close the four open rate-limit incidents under Vorfälle after you sign in.

User · 14:03

no incidents in the log, fyi

Claude · 14:03

That's expected so far: incidents go to the database only and show up under Vorfälle, not in docker compose logs. The app logs only the cases where reporting an incident itself fails.

For rate limits, a log line would be useful, though:

• Operators see attacks in docker compose logs app without signing in. Today you needed the rpc command for that, and you couldn't sign in.
• fail2ban could block IPs at the server's firewall from such a line. That's the outside-the-app measure from #126.

The line would look like this, at level warning:

rate limit reached: sign_in_ip from 203.0.113.7 (user@example.com)

Shall I add it? Also: does "no incidents" mean that signing in works for you now after the deploy?

User · 14:03

i can log in as sales

Claude · 14:04

Good, sign-in works again. The real cause was the typing counter, not bots.

What #126 fixed in total:

• Typing no longer counts as attempts; only submitted sign-ins do.
• The app sees the visitor's real IP behind Caddy and Docker. This also fixes the contact-form limit, which shared one counter for everyone since the first deployment.
• Bots lock out only themselves: counting per address and IP means they no longer block an account's owner.

I've noted this in the memory, including the backlog item about the warning from the demo seeding.

Still open: shall I also write a log line for every limit reached? It would make attacks visible in docker compose logs and would be the basis for fail2ban. And you can close the four old rate-limit incidents under Vorfälle as admin; they all came from your typing and from the proxy address.

User · 14:04

I thought the admin email was admin@mittenin.at ?

Claude · 14:04

Yes, it is admin@mittenin.at. It just isn't listed on the sign-in page, on purpose (#45). Its password isn't mercator-demo either; it's the value of DEMO_ADMIN_PASSWORD in the server's .env.

One catch: the password is set only when the account is created, at the first seeding on an empty database. If you changed DEMO_ADMIN_PASSWORD in .env after that first start, the old value still applies. The nightly reset at 03:00 creates the account again with the current value.

If signing in as admin doesn't work, this sets the current value from .env right away, without a reset:

docker compose exec app bin/mercator rpc 'require Ash.Query; Mercator.Accounts.User |> Ash.Query.filter(email == "admin@mittenin.at") |> Ash.read_one!(authorize?: false) |> Ash.Seed.update!(%{hashed_password: Bcrypt.hash_pwd_salt(System.fetch_env!("DEMO_ADMIN_PASSWORD"))}); IO.puts("ok")'

It reads the password from the container's environment, so it never appears in your shell history or in the logs.

User · 14:06

we have twice: Limit erreicht: Anmelde-E-Mails von ::ffff:172.20.0.1 and twice: Limit erreicht: Anmeldeversuche von 203.0.113.42

Claude · 14:06

That fits the data. There are four rate-limit counters, but the titles only distinguish two kinds, so you see pairs that look identical:

Title	Counter	Means
Anmeldeversuche von 203.0.113.42	per address + IP	10 attempts for one address from your IP
Anmeldeversuche von 203.0.113.42	per IP	30 attempts from your IP, all addresses
Anmelde-E-Mails von ::ffff:172.20.0.1	per address + IP	3 emails for one address from the proxy address
Anmelde-E-Mails von ::ffff:172.20.0.1	per address in total	10 emails for one address from all IPs

details shows the counter (bucket sign_in vs. bucket sign_in_ip), but the title doesn't. All four come from the two bugs: counting your typing, and the proxy address. You can close them all.

I'd make the titles unambiguous, e.g. "Limit erreicht: Anmeldeversuche für eine Adresse von 203.0.113.42" vs. "…: Anmeldeversuche von 203.0.113.42 (alle Adressen)". I'd do that together with the log line for each limit reached, which is still open. Shall I do both?

User · 14:06

i closed them

Claude · 14:06

Good, the list is clean now. From here on, a new rate-limit incident means a real attack, or someone who really mistyped their password ten times.

Still open from my side, both small and both optional:

1. Clearer titles for the four counters.
2. A log line for each limit reached, for docker compose logs and later fail2ban.

Tell me if you want them. Otherwise next up is Mollie, once you have the test key.

User · 14:07

neither, before I realized, that the box with the accounts, will attract spammers and generate lots of spam to my catch all. Any ideas there?

Claude · 14:08

Yes, the addresses on the sign-in page are the weak point: scrapers collect them, and your catch-all accepts whatever comes. Some options:

1. One-click demo login, without addresses (my recommendation): the card shows buttons such as "Als Vertrieb anmelden", "Als Kunde anmelden". The server signs in the matching demo account directly, only in demo mode and only for the public demo accounts. No email address or password appears in the HTML, so there's nothing to scrape. It's also more convenient for visitors than copying credentials.
2. New demo addresses: the old ones have been public for a few hours and may already be collected. Changing them to, for example, @demo.mittenin.at (a subdomain without an MX record, so no mail arrives there at all) or to new local parts makes the collected ones worthless for the app.
3. On the mail server: a filter or Sieve rule that discards mail to the old demo addresses unless it comes from robot@mittenin.at. Or switch the catch-all off and set up only the addresses you need. That catches what's already out there.

One question shapes 2: #127 what should happen to the emails the shop itself sends to the demo accounts? Examples are order confirmations to "Karl Luchs", offers to the customers, and notifications to sales. Options:

• (a) Don't send them at all in demo mode: silently dropped, or recorded only in the log.
• (b) Redirect all of them to one inbox of yours: you see what the shop sends, without spam reaching it.
• (c) Keep sending to the demo addresses as now: then the addresses must stay deliverable, so a no-MX subdomain is out.

My suggestion: 1 + 3 now, and for #127 (b), with one address you choose, set in .env as DEMO_MAIL_TO. What do you think?

User · 14:09

we start with 1

Claude · 14:09

Starting with option 1. First I'm checking how our AuthController signs a user in, so the demo login uses the same session handling:

Good, it stores the token. Now the code: a lookup in Mercator.Demo, the controller action, the route, and the card with buttons instead of addresses.

Now the card: buttons with name and role only, no addresses, password or fill-in hook.

Now updating the demo tests: the page must contain no addresses and no password, and the button must sign in, only in demo mode and only for public accounts.

All 10 pass. Now the German texts and the docs: DOCKER.md, the decision in the roadmap, and #127 as an open question.

Sobelow again: the TRUNCATE line moved because demo.ex grew. Re-marking the skip:

Green: 636 tests. Committing, then a quick look in the browser if the dev server still runs in demo mode:

Option 1 is done and committed as cdac956; precommit passes with 636 tests. It isn't pushed yet. I skipped the local browser check, as you said.

• Sign-in page: the demo card now shows one "Anmelden" button per demo account, with only the name and role. A click signs straight into that account.
• Nothing to harvest: no email address and no password appear in the page source; a test checks that. The button only sends a short key such as sales.
• Restrictions: it works only in demo mode and only for the public demo accounts. The admin can't be signed in this way, and an unknown key gets a 404. Tests cover these cases too.
• Docs: DOCKER.md and the roadmap are updated.

To deploy: push, then on the server git pull && docker compose build && docker compose up -d.

The addresses already collected will keep receiving spam through your catch-all. Only a mail-server filter for those six addresses (option 3) or new demo addresses helps against that.

I've recorded the question about the shop's own emails to the demo accounts as #127 in the roadmap; it's still open. My proposal is to redirect them all to one inbox of yours. Then the demo accounts can move to an undeliverable address, and spam to collected addresses goes nowhere.

User · 14:14

no, we leave it as is

Claude · 14:16

Okay, the demo addresses stay as they are, and the shop keeps sending its emails to them. I've recorded #127 as decided in the roadmap; committed as c9c9b4f, not pushed yet. The open questions are empty again.

So against spam, there's the one-click sign-in, which publishes no new addresses. For the addresses already collected, a filter on your mail server is the remaining option, if the spam gets annoying.

The next step is still Mollie, once you have the test key.

User · 14:39

First test response: "Rückruf per E-Mail" is strange wording, should be "Antwort per E-Mail", I guess.

Claude · 14:58

The wording appears in three places: the sales desk, the notification email to staff, and the confirmation for the customer in the chat. Looking at all three:

There's also a chat message with this wording (chat_live_test.exs:168). Finding where it's created:

I'll change the email variant in all places: the chat note, the desk, the badge and the staff email. The phone variant stays "Rückruf gewünscht per Telefon".

The existing tests pass, but none covers the email variant. Adding one, modeled on the phone case in the desk test:

The UI parts pass. The email check used the conversation as it was before the callback request; reloading it:

The wording is fixed, committed as 4427a1c; precommit passes with 637 tests. It isn't pushed yet.

• Email replies: when a customer asks for a reply by email, the chat note, the sales desk (note and envelope icon) and the staff email now say "Antwort per E-Mail gewünscht: …". The badge in the desk list says "Antwort per E-Mail".
• Phone: still "Rückruf gewünscht per Telefon". The email subject now says "Rückruf gewünscht: …".
• Test: a new test covers the email variant: badge, note and email subject.

On Mollie and the bank account: as far as I know, you don't need one for the test key. Mollie creates the test API key (test_…) right after sign-up, and you can use it immediately. The bank account, company details and identity check are part of the onboarding Mollie requires before real payments (live key and payouts). For our webhook test, the test key is enough; payments are only simulated there. If the dashboard still asks for the bank account, you can usually skip that step for now. I can't check the sign-up process myself, so if Mollie insists, tell me what it says.

User · 15:06

meanwhile I have fully registered and I have an API key. Where should I put it?

Claude · 15:06

The key goes into the .env on the home server, next to the other secrets. It never goes into the repository, and please don't paste it here in the chat.

# on the server, in ~/mercator/.env
MOLLIE_API_KEY=test_...

Use the test key (test_…) for now, not the live key (live_…). With the test key, Mollie only simulates payments, and its test payment page lets you choose the outcome (paid, failed, canceled…).

docker-compose.yml already passes MOLLIE_API_KEY into the container. The app doesn't use it yet, though: the Mollie adapter is the next step (phase 7 step 3), and I'll build it now. Until then the key does nothing, so there's no need to restart for it.

The steps:

1. Me: the Mollie adapter: payment creation, webhook, status query, refund, with tests against a simulated Mollie API. Once the key is set, Mollie appears under Verwaltung → Zahlungsanbieter next to the simulator.
2. You: set the key in .env, then git pull && docker compose build && docker compose up -d.
3. Together: switch Mollie on at Verwaltung → Zahlungsanbieter, place a test order, and check that Mollie's webhook reaches https://biber.mittenin.at/payments/mollie/webhook and the order shows as paid.

For local development, the same variable can be exported in your shell before mix phx.server. Webhooks won't reach your PC, though; for that we need the server.

Shall I start on the adapter?

User · 15:07

yes

Claude · 15:07

Starting the Mollie adapter. First I'm reading the design for step 3, the provider behaviour, and how the simulator and webhook implement it:

Now the webhook controller and how Mercator.Payments uses the provider:

The flow is ready for a second provider; only the adapter is missing. Checking a few order fields for the payment description and language, plus the payments config in the environments:

Writing the adapter. Mollie's API v2 uses JSON, a Bearer key, and amounts as strings with two decimals.

Now the config: Mollie is registered in production and dev (in dev next to the simulator), and the key comes from MOLLIE_API_KEY. Tests stub the HTTP calls with Req.Test.

Both pass. Now the German texts and the docs: .env.example still says "until Mollie is built", and DOCKER.md and the design need the new state.

Adding a short Mollie section to DOCKER.md before "Verify":

The adapter is committed as b957486; precommit passes with 647 tests. It isn't pushed yet.

Your key works: I asked Mollie's API through the running dev server for the enabled payment methods (read-only, no payment created). The test key has card, bank transfer, Pay by Bank and EPS enabled. Mollie appears as "Mollie (Testmodus)" next to the simulator.

You can test locally now:

1. As admin, go to Verwaltung → Zahlungsanbieter and switch to Mollie (Testmodus). The simulator is active at the moment.
2. Place an order as a customer with "Online bezahlen".
3. You land on Mollie's test page. Choose a method, then the outcome: "Paid", "Failed", "Canceled"…
4. Mollie sends you back to the order. The shop asks Mollie for the status and shows "bezahlt" or "nicht bezahlt – erneut versuchen".

Locally there's no webhook, because Mollie can't reach your PC; the return page does the sync instead. Try "Failed" once too: the order should offer "Jetzt bezahlen" again.

Afterwards, on the server: put the key in .env, then push here and run git pull && docker compose build && docker compose up -d there. Switch Mollie on there as well, and the webhook test against https://biber.mittenin.at/payments/mollie/webhook can begin. In demo mode, the nightly reset switches back to the simulator. If Mollie should stay active in the demo, I'd need to make that configurable.

User · 15:18

which card should i put in mollies interface?

Claude · 15:18

Mollie has its own test card numbers. These are the ones I know from Mollie's testing documentation:

Card	Number
Visa	4543 4740 0224 9996
Mastercard	2223 0000 1047 9399
American Express	3782 822463 10005

Any future expiry date, any CVC (four digits for Amex) and any name will do. After that, Mollie's test page usually lets you choose the result: paid, failed, and so on.

I can't open Mollie's documentation from here, so take the numbers with a little care. If Mollie rejects them, the testing page in Mollie's docs or a link on the test checkout itself has the current ones. The simulator's 4242… card is Stripe's convention, not Mollie's.

Simpler for the first run: choose EPS (or bank transfer) on Mollie's page. In test mode, Mollie then skips the bank and shows the status selection directly, with nothing to type in.

User · 15:21

looks good, eps with paid works, the three other states baically hang at mollie, as you described. I guess I should deploy and test on the server?

Claude · 15:21

Yes, deploy now. One correction first: I hadn't described that behaviour; I only said what the shop shows when you come back. That Mollie keeps you on its page for the other states is probably on purpose. After a failed or expired payment, Mollie lets the customer try another method instead of sending them straight back. Locally, the shop then only learns the result when the customer clicks back to the shop.

That's exactly what the webhook on the server is for. Mollie reports every status change to the shop, whether or not the customer comes back.

1. Here: push (the Mollie adapter and the last fixes aren't on origin/main yet).
2. Server: add MOLLIE_API_KEY=test_... to .env, then:

   git pull && docker compose build && docker compose up -d
   

3. Switch on: sign in as admin, go to Verwaltung → Zahlungsanbieter and choose "Mollie (Testmodus)".
4. Test, with docker compose logs -f app open:
   • EPS → "Paid": you should see POST /payments/mollie/webhook in the log, and the order should be paid even before you click back.
   • "Failed", then stay on Mollie's page: the webhook should arrive anyway. Back in the shop, the order shows "Jetzt bezahlen".
   • "Canceled": same as "Failed".

If no POST /payments/mollie/webhook shows up, the customer's order page has the payment ID (tr_…). Mollie's dashboard has a webhook log for each payment, showing what Mollie sent and what came back.

User · 15:29

the mollie webhook triggers to POST /payments/mollie/webhook only, when you tell mollie to successfully pay. I tested on demo.

Claude · 15:29

That's not a problem for the shop as long as Mollie hasn't actually changed the status. I suspect it hasn't: while the customer stays on Mollie's page after "Failed" or "Canceled", the payment probably remains open at Mollie, so the customer can still try another method. Mollie calls the webhook only when the status changes. "Paid" is final right away. For an abandoned payment, the final status comes later, when Mollie lets it expire, depending on the method somewhere between minutes and hours. Then the webhook should arrive with "expired".

You can check that in Mollie's dashboard: open one of the payments where you chose "Failed".

• Status still "open": as expected. The webhook comes with the final status.
• Status "failed" or "canceled", but no webhook in its log: then something's off, and I'll look into it.

Either way, the shop handles it correctly. An order that isn't paid stays "placed" with its goods reserved, and the customer can start a new attempt with "Jetzt bezahlen" at any time. An open earlier attempt doesn't block that. Only a "paid" changes the order, and that one arrived by webhook in your test.

So phase 7 step 3 is basically done: the adapter works locally and on the server, and the webhook arrives for payments. I'll record that in the roadmap once you've told me what the dashboard says.

User · 15:30

mollies dashboard. i don't see anything for the test api...

Claude · 15:30

Mollie's dashboard keeps test and live data apart. As far as I know, there's a switch "Testmodus" (or "Test mode") in the top bar or next to the website profile, and test payments only show while it's on.

I can also check directly: the dev server has the same test key, so I can ask Mollie's API for the latest payments (read-only):

That explains a lot. There are only three payments with this test key:

Created (local time)	Order	Status	Webhook
17:17	BH-2026-00016	paid (EPS)	no (local)
17:19	BH-2026-00017	open, expires at 17:34	no (local)
17:28	BH-2026-00012	paid (EPS)	yes (server)

Two findings:

1. "Failed" doesn't end the payment. BH-2026-00017 is probably the attempt where you chose a failure state. At Mollie it's still open and expires after 15 minutes. So Mollie had nothing to report yet, which is why there was no webhook. That one was created locally, though, so it won't send a webhook even when it expires.
2. Only one payment from the server. The attempts where you chose "Failed" or "Canceled" on the server don't exist with this key. Either the server's .env has a different key (from another website profile at Mollie), or those attempts went to the simulator, which is still active in parallel. Is the key on the server the same as here?

For a clean test of the expired case on the server: start a payment, choose "Failed" or just close the tab, and wait 15 minutes. Then POST /payments/mollie/webhook should show up in the log, and the payment attempt should be "expired".

User · 15:32

i put the same key in both places. let's wait 15min

Claude · 15:32

Good. Then the failure attempts on the server most likely ran through the simulator, or you only tried them locally. Either way, it doesn't matter for the test now.

For the expiry test:

1. Start a new online payment on biber.mittenin.at, with Mollie active there.
2. On Mollie's page, choose "Failed", or just close the tab.
3. Keep docker compose logs -f app | grep -i webhook running and wait about 15 minutes.

Tell me when the time is up. I'll then check through the API here what status Mollie reports, and you'll see in the log whether the webhook arrived. If it did, the payment attempt in the shop is "expired" and the order offers "Jetzt bezahlen".

User · 15:33

17:32:45 for reference for a new 'EPS Fehlgeschlagen', waiting for the callback now.

Claude · 15:33

Noted, 17:32:45. I'm checking right away whether Mollie has the payment with the webhook URL, and when it expires:

Understood, I'll leave it alone. For the record: that query would have gone to Mollie's API, not to the dev database. Mollie lists all payments for the key, including the ones the server creates, since both use the same key. That's how the server payment BH-2026-00012 showed up in the list before.

So we wait until about 17:48. Then, on the server:

• In the log: POST /payments/mollie/webhook with a 200.
• In the shop: the order shows "Jetzt bezahlen", and the payment attempt is "expired".

If you want me to ask Mollie at that point what it reports for the payment, just say so.

User · 15:38

i now found it also in the mollie interface:

<pasted_content id="1f3a"> 51,78 €

Offen

Biber Holz BH-2026-00013

Heute um 17:32

4.115,96 €	

Bezahlt

Biber Holz BH-2026-00012Max Mustermann

Heute um 17:28

15,90 €	

Verfallen

Biber Holz BH-2026-00017

Heute um 17:19

167,34 €	

Bezahlt

Biber Holz BH-2026-00016Max Mustermann </pasted_content id="1f3a">

Claude · 15:38

That confirms the theory:

• BH-2026-00017 (local, 17:19) is now "Verfallen". After 15 minutes, Mollie moved the payment from "open" to "expired". There was no webhook because it was created locally.
• BH-2026-00013 (server, 17:32) is still "Offen". "EPS Fehlgeschlagen" didn't end it either, just as with 00017. It should expire at about 17:47. Mollie then calls the webhook, because this payment was created on the server with the webhook URL.

So around 17:47 the log should show POST /payments/mollie/webhook, and the payment attempt for BH-2026-00013 in the shop should be "expired".

User · 15:40

i see a incident on the home server: Ein Zahlungsstatus konnte nicht abgefragt werden what does that mean?

Claude · 15:40

That incident means the shop asked the payment provider for a payment's status and got an error instead of an answer. The reason is in the incident's details. Checking what exactly gets recorded:

The incident links the order, and its details field holds the provider's actual answer. The most likely cause, given today's redeploys:

• The details say :not_found, and the order was paid with the simulator: the simulator keeps its payments only in memory, so every container restart, i.e. every redeploy, forgets them. If an order with an open simulator payment is opened afterwards (customer order page or return page), the shop asks the simulator, gets "not found", and reports this incident. No real problem, just a side effect of the simulator.
• It's a Mollie order (tr_…), with something like {:http, 404, …}, a timeout or a TransportError: then Mollie itself didn't answer properly. That would be worth a closer look.

What do the details say, and which order is linked? If it's the simulator case, I'd make the simulator treat a forgotten payment as "expired" instead of an error. The order then simply offers "Jetzt bezahlen" again, with no incident.

User · 15:41

That was before mollie, it was the simulator. You need not touch it any more.

Claude · 15:41

Okay, I'll leave the simulator as it is. Then the incident is that side effect: a simulator payment from before a redeploy, which the simulator had forgotten after the restart. You can close it.

For Mollie, the webhook for BH-2026-00013 should arrive at about 17:47, when Mollie lets the payment expire. Tell me what you see in the log, or if nothing arrives.

User · 15:44

meanwhile I saw in mollie the right metadata for the request we are waiting for:

<pasted_content id="1f3a"> Metadaten Metadaten

{ "order_number": "BH-2026-00013" }

Webhook URL https://biber.mittenin.at/payments/mollie/webhook URL-Umleitung https://biber.mittenin.at/account/orders/BH-2026-00013/payment Zahlungs-URL https://www.mollie.com/checkout/test-mode?method=eps&token=7.8vnu0y </pasted_content id="1f3a">

Claude · 15:44

Everything Mollie needs is there:

• Webhook URL: https://biber.mittenin.at/payments/mollie/webhook, public and HTTPS. Locally the shop leaves it out, so locally created payments have none.
• Redirect URL: the order's payment page. When the customer comes back, the shop asks Mollie for the status.
• Metadata: the order number, so you can find the order from Mollie's dashboard.
• Payment URL: Mollie's test checkout with EPS.

So when the payment expires, about 15 minutes after 17:32, Mollie should call exactly that URL. In Mollie's dashboard, the same payment page usually also shows the webhook calls and the response our server gave (it should be 200).

User · 15:45

and the other one was from dev: http://localhost:4000/account/orders/BH-2026-00017/payment no surprise that now callback to biber

Claude · 15:45

That's right. BH-2026-00017 came from your dev server, so its redirect URL is localhost:4000 and it has no webhook URL at all. The adapter leaves it out on purpose, because Mollie refuses URLs it can't reach. That payment could never call biber.mittenin.at; it simply expired at Mollie, and the dev shop learns that only when someone opens the order page.

One thing to watch: dev and the demo use the same test key, and their order numbers can overlap, like BH-2026-00013 in both databases. In Mollie's dashboard, only the redirect URL tells you whether a payment came from dev (localhost) or from the demo (biber.mittenin.at). The payments themselves don't interfere: each shop recognizes only its own payment IDs, and a foreign webhook would become a harmless "unknown payment" incident.

User · 15:50

i saw absolutely nothing in the log, but i saw one more thing in molly's interface for the request: Gültig bis eine Stunde

Claude · 15:50

Then we have to wait longer: Mollie keeps this payment open for an hour, so it expires at about 18:33. Only then does it get its final status, and the webhook follows.

Why 15 minutes for BH-2026-00017 and an hour now, I can only guess. Mollie sets the validity per payment method and situation. A payment where a method was already chosen and failed may get a different deadline than a fresh one. The API answer for 00017 gave exactly 15 minutes (created 17:19, expires 17:34).

So nothing in the log so far is expected. At about 18:33 the log should show POST /payments/mollie/webhook. If nothing has come by 18:45, tell me. Then I'd look at Mollie's webhook log for the payment, and at the reverse proxy.