feat(linkedin-studio): specifics-bank store — lived-specifics inventory (fix #2 slice 1)

Fix #2 (kilde-så-draft) slice 1: the deterministic STORE half of the
lived-specifics bank — the operator's real, un-generatable raw material
(measured number / named-but-real case / what broke / contrarian opinion /
mind-change), so drafts start grounded instead of hollow (retning §3;
dream-spec "Lived-Specifics Extraction", the single biggest missing upstream
piece for the authenticity thesis).

scripts/specifics-bank/ (sibling to contract-gate, same tsx convention):
- src/types.ts — Specific/Bank schema (schemaVersion 1), un-generatable taxonomy
- src/bank.ts — pure store: normalizeContent, content-hash id (= dedupe key),
  load/save, addSpecific (dedupe + topicTag union on re-capture), queryByTopic
  (active-only, ranked by tag overlap then recency)
- src/cli.ts — query / add / list; default bank under
  ${LINKEDIN_STUDIO_DATA:-~/.claude/linkedin-studio}/specifics-bank/ so it
  survives plugin upgrades/reinstalls (M0 data-path seam)
- tests/bank.test.ts — 15/15 green; tsc clean
- README + .gitignore for node_modules/build

Content is stored verbatim; never AI-generated. The elicitation interview
(refuses vague answers; abstrakt/ekstern escape hatches) lands in slice 3
(/linkedin:newsletter Step 1.5). Forward-compatible with the profile-evolution
/ "second brain" architecture.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -59,6 +59,8 @@ scripts/analytics/node_modules/
 scripts/analytics/build/
 scripts/contract-gate/node_modules/
 scripts/contract-gate/build/
+scripts/specifics-bank/node_modules/
+scripts/specifics-bank/build/
 
 # --- session/local state ---
 # STATE.md is LOCAL-ONLY (gitignored): no private remote exists and STATE must