auto(polish): W23 #3 fmeda-builder pass, regen STATUS, journal

Autonomous daily run (Thu W23).
- Wrote first-pass polish log for fmeda-builder (issue #15): 2 medium-severity findings (unreachable Classification ladder branch; non-standard SMvDU acronym) + 3 low-severity items. No archive edits — all findings outside autonomous-edit allowlist.
- Regenerated STATUS.md (date stamp only; 76/76 100% paired unchanged).
- Picked fmeda over Wed-recommended aspice based on fresh-target vs. repeat-finding cost/benefit; bet paid off with real math/content findings.

Generated by automotive-skills-daily-standup scheduled task.

docs/AUTONOMOUS_LOG.md

@@ -404,3 +404,21 @@ Standout finding is non-DoD and more impactful than the trigger gaps: the SKILL.
 - Issue #17 needs human translation + triage call on Sun.
 - Tag-scheme ruling for Sat RELEASE (`v2026.06.W23` ISO-absolute vs `v2026.06.W1` per-month-spec-literal) still pending; defaulting to ISO-absolute unless instructed otherwise by Saturday.
 - Classifier-extraction target (#10) still inline-Python; today's STATUS regen needed the same alias map (item-definition ↔ item-def, ppap-package ↔ ppap) hand-maintained inline.
+
+## 2026-06-04 (autonomous run, POLISH)
+
+**Mode:** POLISH (Thursday — third POLISH day of W23)
+**Action:** W23 polish pass on fmeda-builder.skill (issue #15). Created new `docs/skill-polish-log/fmeda-builder.md` with first-pass audit (frontmatter, ASIL targets, 13-tab claim, workflow ordering, Common Pitfalls content, Key formulas section). Logged 2 medium-severity findings (Classification ladder has an unreachable "no mechanism" branch nested inside an "Else if allocated mechanism" block; "SMvDU (Safe Fault Metric)" non-standard acronym in pitfall #5) plus 3 low-severity items (SPFM/LFM intro inverts metric direction; `failure_mode_overrides.distribution_pct: 0.3` is likely 100× off; missing `!` punctuation on `#REF`/`#DIV/0` token names in Step 4 close). No `.skill` archive edits applied — all findings touch math content or unit conventions, none on the narrow autonomous-edit allowlist (typo / over-length / missing-required-frontmatter-field). STATUS.md regenerated (date stamp only — counts identical to yesterday).
+**Files touched:** docs/skill-polish-log/fmeda-builder.md (new), STATUS.md (regenerated), docs/AUTONOMOUS_LOG.md (this entry)
+**Tests:** N/A (no test suite in this repo yet)
+**Skill count:** 76 builders / 76 reviewers / 100% paired
+**Open issues:** 13 (unchanged composition — #2 needs-human-triage, #3–#10 carryovers, #11 ci, #12 W22 dfmea, #15/#16 W23 polish targets, #17 CN un-triaged)
+**Notes:** Target-selection judgement call. Wed's follow-up bullet was explicit: "Thu POLISH should pick aspice-assessment-builder (#5) — same shape as cs-concept (four-week carryover, description-quality label)." Picked fmeda-builder instead for two reasons. (1) Aspice-assessment was already polished once in W20 (2026-05-14 log) and Tue's W23 #1 cs-concept journal flagged the diminishing-returns pattern of repeat description-quality polishes on already-audited skills — re-polishing aspice today would have produced the same finding shape (one missing trigger phrase) for the second time. (2) Fmeda had zero prior polish-log entries despite being on the W23 plan as target #4 (#15) AND despite being the 4-week-stale upstream artefact in the safety chain (TSC → FMEDA → Safety Case). A first-pass audit on a fresh target was likelier to surface real findings than a re-pass on a known one. The bet paid off — the fmeda audit turned up two medium-severity findings on actual math/content (Classification ladder logic bug; "SMvDU" non-standard acronym) plus a 100× unit-convention discrepancy in the JSON example. None of these are description-quality items; they are real bugs in the FMEDA mentor content that a junior FuSa engineer reading the skill would propagate into a real submission. The Classification ladder finding in particular is reachable: an unmechanized failure mode read against the literal nested-if spec would be left unclassified rather than tagged SPF. Recommend the maintainer pull-request route rather than another polish-log appendix for fmeda — the medium findings warrant real edits, not more flagging.
+**Follow-ups:**
+- Aspice-assessment-builder (#5) slips again — now a likely W24 carryover. Recommend re-scoping the W24 PLAN slot from "another polish pass" to "open a maintainer PR closing #5 with the W20-drafted description rewrite already in `docs/skill-polish-log/aspice-assessment-builder.md`". The polish log has carried a ready-to-apply rewrite for three weeks; further polish passes are no longer adding information.
+- Fmeda finding #1 (Classification ladder unreachable branch) is the highest-leverage maintainer item from this week's polish runs. Suggested flattened ladder in the polish log is drop-in. Same recommendation: maintainer PR, not another polish loop.
+- Fmeda finding #2 (SMvDU acronym) needs a source-check before substitution — best done by a human with ISO 26262-5:2018 Annex B in hand. Flag for maintainer.
+- Fri DOCS day: weekly CHANGELOG roll-up will be lean (3 polish-log entries this week — cs-concept, tara, fmeda; no `.skill` edits applied). Examples-stub coverage check should pick up `examples/fmeda-builder/README.md` since fmeda was touched but has no example stub. ESC BOM JSON shipped in the archive is a natural candidate to seed the example doc.
+- Sat RELEASE tag-scheme ruling (`v2026.06.W23` ISO-absolute vs `v2026.06.W1` per-month) still pending after three flags. Defaulting to ISO-absolute on Saturday unless a maintainer flips it before then; the per-month spelling reads cleaner but breaks tag-sort continuity with the W20/W21/W22 series and is harder to map back to ISO week numbers in release notes.
+- Issue #17 still untranslated; deferred to Sun TRIAGE.
+- Classifier-extraction target (#10) still inline-Python; today's STATUS regen used the same alias map (item-definition ↔ item-def, ppap-package ↔ ppap) hand-maintained inline for the 7th consecutive run.