diff --git a/Session2.md b/Session2.md new file mode 100644 index 0000000..de5a224 --- /dev/null +++ b/Session2.md @@ -0,0 +1,298 @@ +# Session 2 Notes — 2026-04-19 + +## What We Set Out to Do + +Jeff opened the session with a platform-team intake form (#25) sitting +in the repo from the homelab-IaC automation. The goal was to establish +a real deploy contract for Quartermaster on home-ctr-onyx, then land +whatever the contract committed the app side to building. Secondary +goal: shake down the subagent-driven-development workflow on a +non-trivial feature pair. + +## What Actually Happened + +One arc, two shipped issues (#26, #27) merged to main, three +deploy-prep issues queued (#28, #29, #30), and one cleanup umbrella +(#31). + +1. **Intake form filled out (#25).** Read the Archon platform contract + for shape, drafted answers from the repo's own state (stack, port, + data store, resource profile), and surfaced six real questions for + Jeff to decide: hostname, exposure, auth mechanism, launch window, + memory budget, structured-log ambition. After he answered, the + form landed as edit-in-place on the issue body. Key decisions: + `quartermaster.unbiasedgeek.com` (product surface, own cert), + public exposure, Traefik basic auth, ASAP, 1 GB memory, JSON logs + at launch. + +2. **Platform team responded (automated).** The homelab-IaC automation + drafted `PlatformContractQuartermaster.md`, provisioned DNS, two + Traefik middlewares (basic-auth, rate-limit), the bind mount with + nightly restic, and the basic-auth credentials — then closed the + issue with a "what you do next on your side" comment enumerating + Dockerfile / compose / Actions / Alembic-on-startup. The comment is + the authoritative next-steps document and got mapped to three + dependent issues after the main work landed. + +3. **Brainstorm → spec → plan for #26 + #27.** Ran the superpowers + brainstorming skill. Two meaningful design decisions: how broad + the seed-event instrumentation should be (picked "B: seed a + handful of events" — 5 events, cheap enough to be useful on day + one, narrow enough not to sprawl), and which JSON formatter + library to use (picked `python-json-logger`, rejected rolling a + stdlib-only `JsonFormatter` subclass). Spec landed at + `docs/superpowers/specs/2026-04-19-healthz-and-json-logs-design.md`; + plan at `docs/superpowers/plans/2026-04-19-healthz-and-json-logs.md` + (851 lines, eight bite-sized TDD tasks). + +4. **Subagent-driven execution.** Eight tasks dispatched sequentially + on `feat/platform-deploy-prep`, each with a fresh implementer + subagent, spec-compliance review, and code-quality review via the + `superpowers:code-reviewer` agent. Model selection: haiku for + mechanical tasks (dep bump, test-only adds, README edits, single + seed events), sonnet for integration tasks (log config + filter, + four coordinated seed events, /healthz endpoint wiring). Fix + commits triggered by review: #20bca13 (restore logger state in + dictConfig test) and #bfe9ed4 (assert healthz_failed log on 503). + Final state: 12 commits on the branch, 148/148 tests passing. + +5. **Merge to main.** User picked "merge locally" over PR. Main had + diverged because an unrelated MCP proposal doc (#23 → PR #24) + landed on origin while we worked. Option-chose rebase over merge + commits: rebased local spec+plan+feature onto `origin/main`, then + fast-forwarded. One snag: dirty `CLAUDE.md` (pre-session + modifications by Jeff) blocked the rebase silently under `set -e`; + stashed, rebased, popped. Linear history preserved. + +6. **Filed follow-up issues.** Three deploy-pipeline issues with + dependency chain (#28 Dockerfile → #29 compose → #30 Actions + workflow) plus #31 umbrella for the three non-blocking code-review + nits. + +## Key Decisions & Reasoning + +* **Intake answers favoured narrow over broad.** Memory budget of + 1 GB (vs the platform's 4 GB default) because the app is genuinely + small. Structured JSON logs as launch work (not deferred) because + Promtail is already there, post-launch retrofits are annoying, and + the Loki-query story is only useful if the events exist from day + one. Rate-limit numbers proposed but deferred to the platform + team's tenant-default preferences. Bind mount specifically called + out to cover both the SQLite file AND the `backups/` directory, so + `scripts/backup-db.sh` keeps working unchanged in production. + +* **Single source of truth for log config (JSON, not dual files).** + Spec originally said "Python dict as source with a YAML shim for + uvicorn." Plan deviated to JSON-as-source loaded by Python at + import, consumed by uvicorn via `--log-config` pointing at the + same file. Reasoning: YAML requires `pyyaml` at runtime (uvicorn + doesn't bundle it), and a dual-file setup introduces drift risk. + The spec was edited mid-execution to reflect the simpler shape. + +* **`pythonjsonlogger.jsonlogger.JsonFormatter` kept despite + deprecation.** The plan used the deprecated module path; the Task 1 + code reviewer flagged it. Kept the plan as-written through Task 2 + (minimum change to ship), then fixed in a cleanup commit at the end + (`pythonjsonlogger.json.JsonFormatter`). This would have been the + wrong call in a busier branch; here it was fine because the branch + was short and the fix was cheap. + +* **Five seed events, not deeper instrumentation.** `month_created`, + `month_closed`, `template_entry_updated`, `posting_added`, + `posting_deleted` at the service-layer mutation sites. Placed after + `db.commit()` + `db.refresh()` so they only fire on durable success. + Payloads are minimal and deliberately exclude anything PII-ish + (no notes content, no names). An audit trail belongs in a table, not + in logs. + +* **`fmt` over `format` in the JSON config.** Plan specified `format`; + implementer hit `TypeError` on direct `factory(**cfg)` because + `JsonFormatter.__init__` inherits `fmt` from stdlib's `logging.Formatter`. + Implementer changed to `fmt`, documented in report. dictConfig with + `()` factory passes kwargs literally, so `fmt` works on both paths. + Plan was slightly wrong; fix was necessary. + +* **`/healthz` on its own router — but only as a file boundary.** + Spec language ("router separation protects from future middleware") + overstated what the separation buys. FastAPI's + `app.add_middleware(...)` is global and ignores routers. The + separation does help if future auth lands as router-scoped + `dependencies=[...]`. For Quartermaster this is moot: auth is + Traefik-side per the platform contract. Documented as a minor + cleanup note in #31 and in the spec's out-of-scope section. + +* **Rebase not merge on the divergence.** MCP proposal doc was + completely independent work; rebasing onto origin/main kept linear + history and read as one story. In a PR-workflow branch we'd have + used the merge button; for a direct local merge, rebase was the + right call. + +## Surprises & Discoveries + +* **The autouse-fixture workaround was wrong.** Task 5's test was + flaky because Task 3's `test_log_config_loads_via_dictconfig` + mutated the `quartermaster` logger's `propagate` flag globally. + Implementer's first fix added a file-scoped autouse fixture. Code + reviewer flagged it correctly: the problem is that the contaminating + test doesn't clean up after itself, and an autouse fixture only + protects tests in the same file — future tests elsewhere that use + caplog on `quartermaster.*` would be bitten silently. Right fix: + save/restore state in the contaminating test itself. This is a + generalisable pattern worth remembering — global-state-leaking + tests should always clean up, don't push cleanup onto every other + test. + +* **LogQL example had a field-that-doesn't-exist.** Third example in + the Logs section was `event="month_closed" | line_format "{{.path}}"`, + but `month_closed` records carry `year_month`, not `path` — + `{{.path}}` would render empty. Caught in the end-of-branch review, + fixed in cleanup commit. Small but exactly the kind of thing a fresh + set of eyes catches; easy to miss when writing docs while holding + the full model in your head. + +* **The subagent TDD discipline worked.** Every implementer subagent + actually wrote the failing test first, verified it fails, then + implemented. I briefed this in every prompt and they followed it. + The TDD failures were logged in each report ("assertion 0 == 1" / + "ModuleNotFoundError"). Didn't need to correct any subagent for + skipping that step. This is a win over direct execution, where I'd + sometimes rationalise past writing the failing test first. + +* **Task 4's smoke test hit `/` and got a 500.** Manual `docker run` + style smoke test in the subagent's CWD where the SQLite file or + schema wasn't set up. Didn't invalidate the task (the JSON access + log WAS captured and proved the format worked), but a reminder + that smoke tests need stable test environments. Worth checking + once deploy lands. + +* **Git `set -e` does not reliably abort on `git rebase` failure + inside a bash heredoc.** The first merge attempt ran three steps + under `set -e`; the rebase failures due to dirty `CLAUDE.md` + exited non-zero but the subsequent `git log` + `git merge` ran + anyway, landing the branch in "accidentally Option-3 state." Had + to untangle with a stash/rebase/pop. Not a subagent issue — bash + quirk, worth remembering. + +* **Platform team's `QUARTERMASTER_DB_URL` example had three slashes.** + Comment on #25 wrote `sqlite:///data/quartermaster.db` (three = + relative). For an absolute path in the container you need four + (`sqlite:////data/quartermaster.db`). Flagged in #29's body so the + compose writer doesn't copy the wrong spelling. + +* **Commits on a long branch, reviewer's recommendation: don't + squash.** The end-of-branch reviewer explicitly argued against + squashing the 12 commits — the fix commits (20bca13, bfe9ed4) tell + a real story about what came up in review. I'd reflexively have + squashed; the case for preserving was more compelling. Left as-is. + +## Concerns & Open Threads + +* **No end-to-end test of the full deploy path.** We have formatter- + level tests, filter-level tests, and a manual uvicorn smoke test + (verified one JSON access log line). What we don't have is a test + that builds the container, runs it, curls `/healthz`, and asserts + on the captured stdout. That's #28 + #29 + #30 territory; the Actions + workflow's post-deploy `curl` step will be the first real end-to-end + assertion. + +* **Deprecation warning is fixed, but we're still using + `pythonjsonlogger.json` — a 4.x module path.** If the library ever + does another reorg or drops the API we're using, the log format + quietly breaks. `python-json-logger` is maintained but small; worth + pinning to a range (`>=3.2,<5`) in `pyproject.toml` if we ever hit + a 5.x migration. + +* **The intake form's §3.7 still says "Endpoint does not exist yet + — will land in the repo before the first deploy cut."** Harmless + because the issue is closed, but stale. If we ever revisit the + form as a template for another app, clean that up. + +* **Session memory about TDD enforcement.** I've been saving feedback + memories about user-specific patterns. This session reinforced that + the subagent-driven skill's TDD gate works when prompts explicitly + require failing-first verification. Saving the pattern is worth it, + but I'm wary of over-memoing the workflow meta; Jeff's CLAUDE.md + global already prefers "do the work, don't narrate the workflow." + +* **Rate-limit numbers still open.** Filed as a platform-team ask on + #25; the response didn't address numbers specifically but the + middleware is deployed at `10/30 per-IP` (matches my starter + proposal in the intake). If that's wrong for this tenant we'll hear + about it when real traffic hits. + +* **CLAUDE.md Session Log is out of date.** The file has a Session 1 + entry; Session 2's wiki page exists now but CLAUDE.md still reflects + pre-session state. Left unmodified this session because the CLAUDE.md + working-tree diff was Jeff's pre-session edit; merging my own + Session 2 references on top would have entangled our changes. Next + session he'll want to land both (his stale edits + a Session 2 bullet + in the log). + +## Raw Thinking + +* **The intake form's "explain what you've already tried" structure + was load-bearing.** When Jeff asked me to "fill out what I can and + ask questions," the right shape was a draft-with-question-list, + not a comment dump. Surfacing six specific binary-ish questions + ("option A or B?") compressed a long back-and-forth into one + round-trip. This pairs with his "minimalist answers" pattern from + Session 1: if I'm clear about my defaults, he answers by approving + or swapping; if I'm vague, I get silence and ship the wrong thing. + +* **Subagent-driven felt like overkill for Task 1 (dep bump) and + Task 3 (test-only additions) — but it caught real issues anyway.** + The Task 2 code reviewer flagged the `pythonjsonlogger.jsonlogger` + deprecation before we'd written a line of production code that + depended on it. The Task 5 reviewer caught the autouse fixture + wrong. These catches would have leaked through "just write the + commit" execution. The cost was roughly 2-3x the token budget of + direct execution; the quality delta was worth it on a branch that + needs to work in prod. + +* **The spec-and-plan artifacts had real value beyond process + ceremony.** Each implementer subagent got pasted a task body of + 100-200 lines that was self-contained: exact file paths, exact + code, exact commit message, verification commands. No subagent + asked "what should the format string be" or "what fields should + the filter set." That prep-once-execute-many pattern is what makes + subagent-driven work at all. The plan file is almost a shared + cache across subagents. + +* **Platform contracts are surprisingly lightweight when one tenant + already shipped.** Archon went through this first, so the intake + form inherited structure, the wiki template existed, and the + platform-team response was mechanical. For the Quartermaster + tenant this worked out to maybe an hour of thinking and a morning + of execution. Future tenants should benefit more. + +* **The Traefik-not-FastAPI auth choice ripples into the code.** + Because auth lives at the edge, `/healthz` stays unauthenticated + with zero effort inside the app, and there's no session middleware + or login template to build. This is why "infrastructure-level + auth" is such a good default for small single-user tools — + the app stays boring. + +## What's Next + +Priority order for the next session: + +1. **#28 Dockerfile.** Run as `USER 1000:1000`, Alembic + uvicorn + entrypoint, `HEALTHCHECK` hitting /healthz. Local build + run + smoke test. Should be small. +2. **#29 compose.yml.** Consumes #28. The bulk of the Traefik labels, + resource limits, required container labels. Mind the four-slash + `QUARTERMASTER_DB_URL`. +3. **#30 Forgejo Actions deploy workflow.** Build, tag by git SHA, + push to the Forgejo registry, SSH to home-ctr-onyx, `docker compose + pull && up -d`, post-deploy `curl /healthz`. First real end-to-end + deploy test. +4. **First production rollout.** Flip the DNS, hit the live URL + through Traefik, verify basic auth works, verify JSON logs flow + into Loki with `event`/`level` as labels. Should be uneventful; + the interesting part was the work leading up to it. +5. **#31 cleanups.** Fold into whichever follow-up PR naturally + touches `service.py` or `routes_health.py`. +6. **Deferred items from #1 still open.** Constrain posting dates to + the month, closed-month archive treatment, cross-month + summaries. Nothing about this session disturbed the priority of + those.