chore(gitignore): block data/handover-* + data/spec-* from accidental tracking

[mitwilli-create]

Summary

Two glob patterns added to the # Personal data section of .gitignore to block [PERSONAL — DO NOT PUBLISH]-frontmatter docs from accidental tracking via git add -A:

data/handover-*.md
data/spec-*-2026-*.md

5 currently-on-disk files now flip from ?? untracked to !! ignored:

• data/handover-apply-now-gate-and-popout-grounding-2026-05-29.md
• data/handover-linkedin-url-canonicalization-2026-05-29.md
• data/handover-process-all-drain-and-visibility-2026-05-29.md
• data/handover-triage-eval-quality-gate-2026-05-29.md
• data/spec-linkedin-url-canonicalization-2026-05-29.md

Why this matters

[PERSONAL — DO NOT PUBLISH] frontmatter is a structural classification — not just a curator note. Without matching .gitignore coverage, a routine git add -A (or a sibling agent's bulk-stage step) can publish the file across the fork boundary in a single keystroke. The two patterns close that surface for every future handover + dated spec doc generated in this workflow.

Aligns with the memory rule feedback_preflight_gitignore_check.md — "Run git check-ignore -v before proposing PR scope or git add; treat [PERSONAL — DO NOT PUBLISH] frontmatter as a structural rule." The pre-flight check is the surfacing mechanism; the .gitignore patterns are the structural backing.

Verification

$ git check-ignore -v data/handover-linkedin-url-canonicalization-2026-05-29.md
.gitignore:8:data/handover-*.md	data/handover-linkedin-url-canonicalization-2026-05-29.md

All 5 files verified — matched by either data/handover-*.md (line 8) or data/spec-*-2026-*.md (line 9).

Scope

• Single-file PR (.gitignore only)
• 2 lines added inside the existing # Personal data section
• Zero code changes
• Zero behavioral changes — purely a tracking-surface guard

Test plan

• git check-ignore -v matches all 5 known files
• Patterns sit inside the existing # Personal data block (line 8-9)
• No other files affected (.gitignore diff --stat = 1 file changed, 2 insertions(+))
• CI green (label + ledger-check + analyze + dependency-review + test workflows expected to pass — no code touched)

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