| bus | english | 4 (layer diagram says `arts/bus` but files in `libs/bus`; stale preset names post-refactor; `COLLECT` error mode undoc) | — | E5-reconciled (agent said book-chapter) |
foreign COMPARATIVA (sium) · several **dead route/demo cross-refs**.
## Batches (mirror F6 drift-fix → F7 structure)
| Batch | Content | Effort |
|---|---|---|
| **A0** | **Guard first**: extend `docs-check` (or a new `arts:check`) — every `src/arts/{name}/` has a README; the `Engine*/Active*` naming holds; (optional) an I-invariant that the arts index lists every art. Ship it so A1–A3 land against a net. | low |
| **A1 — drift sweep** | Fix the ~40 doc↔code mismatches, art by art (verify each edit against the code symbol the audit cited). Priority by count: orca(6) · bus/cache/format/timer(4) · active-app/adom/color(3) · connection/prefs/sium(2) · clipboard/http/motion(1). Also the dead cross-refs (adom `/test/adom`, connection `/active`+`conn-chat`, perm `/test/perm`, cache demo URL). | high |
| **A2 — ES→EN** | Translate the 8 Spanish + 4 mixed READMEs (faithful, mark stale with `<!-- TODO(reconcile) -->`, same rule as F6). Biggest: orca, adom, format, connection, prefs, sium. | high |
| **A3 — ethereal README** | Author `src/arts/ethereal/README.md` (it only has `PERF.md`). Ethereal is the floating/positioning engine (`$ethereal` = the own floating-UI runtime). Follow the art README shape; link `PERF.md` as its correctness record. | low |
| **B1 — active-app chapter** | Promote `active-app` to `docs/architecture/active-app.md` — the arts composition root, the missing analogue of `active-uix.md`. Extract the "Handoff 2026-05-13" Spanish block to `docs/process/`; ES→EN; stub at the old path (like the layer READMEs). Wire into `docs/README.md` E1 + the reading order. **This is the "active-app was missing from the book" fix the user pointed at.** | medium |
| **B2 — DESIGN docs** | Move the historical design docs to `docs/decisions/` like the eidos RFCs (they're already indexed in `docs/decisions.md`): `DESIGN_CONN.md`, `session/DESIGN.md`, `timer/DESIGN_TIMR.md` (Spanish, 1400 L — translate or move verbatim-as-historical per the F7 chronicle rule). Stubs at old paths keep the ~30 `DESIGN_TIMR §12.8`-style provenance citations resolving. `sium/COMPARATIVA` is foreign/untracked — leave unless staged. | medium |
| **B3 — index + TOC** | Verify `src/arts/README.md` lists all 22 (add any missing); confirm `docs/README.md` E5 pointer + add the arts to the "I want to… use a runtime artifact" shortcut. `docs:check` green. | low |