docs: log Sprint-0 session 2026-10-19

docs/devlog/2026-10-19.md

@@ -0,0 +1,54 @@
+---
+type: devlog
+date: 2026-10-19
+sprint: 0
+minutes: 45
+tags: [devlog]
+---
+
+# Dev log — 2026-10-19
+
+## What I did
+- Task 0002 (issue #3): verified the toolchain and set up the fast-feedback loop.
+  Decision: stay on the Arch pacman `rust` package (1.99.0, clippy/rustfmt included) —
+  rustup would duplicate what pacman already manages.
+- Installed bacon 3.26.0 and added `bacon.toml`: default job `check`, `clippy` pinned to
+  `-- -D warnings` (CI parity). The built-in `clippy` job does NOT fail on warnings —
+  list the effective jobs (`bacon --list-jobs`) instead of trusting defaults.
+- Verified the watch loop with an inject/revert probe: clean → warning shown → clean
+  again. rust-analyzer works on the project; local baseline green (fmt/clippy/test).
+- Recovered the lost "lesson prompts" side chat from the local ZCode session database;
+  wrote [[workflows/session-workflow|session-workflow]] and turned both prompts into
+  project commands (`/lesson-plan`, `/lesson-close` in `.agents/skills/`).
+- Wired DevLog into Obsidian: Daily notes (folder `docs/devlog`, template `TMP/DevLog.md`)
+  and a Dataview "Files touched today" table.
+
+## Files touched today
+```dataview
+TABLE WITHOUT ID file.link AS "Note", file.mtime AS "Modified"
+WHERE file.mtime >= date(this.file.name) AND file.mtime < date(this.file.name) + dur(1d)
+  AND file.path != this.file.path
+  AND file.folder != "TMP"
+SORT file.mtime DESC
+```
+
+
+## Code review notes
+Reviewer feedback and what I changed because of it.
+
+## Rust notes
+Tooling day — no new Rust syntax; the compiler never got a chance to complain.
+
+## English practice
+New words and phrases I used today:
+- *watch mode* — режим слежения; *bacon re-runs the checks on every save in watch mode*.
+- *parity* — соответствие, одинаковость; *the clippy job now has parity with CI*.
+- *headless* — без интерфейса; *I verified the jobs headless, without the TUI*.
+- *recover* — восстанавливать; *I recovered the lost conversation from the local database*.
+
+## Next session
+- Try `/lesson-plan 45` in a fresh session; adjust the command if the plan shape is off.
+- Drill D3: three deliberate compiler errors (E0382, E0308, E0384) into the ErrorJournal
+  with self-correction cues.
+- Merge session-workflow + skills commits are on `main` — push when ready; then Sprint-0
+  retro and close-out.