SB-S0 (Foundation) of the second-brain arc: a new TS package scripts/brain/
(structural copy of specifics-bank) establishing the spine later slices hang on.
TDD throughout (failing test first); fold scope = P1+P2 only per operator decision.
- types.ts: one provenance vocab (human|published|ai-draft) + the six-field
ProfileFact record + two-layer ProfileDoc.
- id.ts: slugify + mintEntityId (sha256[:12], kind-namespaced, slug-keyed so the
id is stable across value edits) + normalizeProvenance (throws on unknown). [SC4]
- profile.ts: no-YAML line-grammar parse/serialize (parse∘serialize = identity over
the whole doc; values may contain ]/|/quotes) [SC2] + foldUserProfile: lossless,
idempotent, source-absent-aware fold of config/user-profile.template.md. Pinned
extraction — P1 labeled scalars (group-headers skipped, [placeholder]→empty) + P2
expertise group; stops at "### Research Tooling" so deferred explainer prose can't
leak in as fields. Checkbox-prefs (Goals/Tone/MCPs/Assets) deferred (§8). [SC3]
- dataRoot.ts: inline per-package resolver (repo idiom; no new seam → SC6).
- scaffold.ts/cli.ts: idempotent `brain init` — brain/{index,profile,operations}.md
+ journal/ + ingest/{inbox,published} under the data-dir; compare-then-skip, never
clobbers a user edit. No session-start wiring (SB-S2 owns it). [SC1]
Gate: new BRAIN floor in test-runner.sh (34 tests; trends/specifics/contract floors
unchanged) + anti-erosion floor 74→75. Full gate 90/0/0, tsc --noEmit clean. [SC5/SC6]
No new command/agent/reference → no version bump, no structure-count change.
Refs docs/second-brain/{brief,plan-sb-s0,architecture}.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RigJBiRFNtFZKCz21qNbQ4
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16 lines
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{
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"name": "linkedin-brain",
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"version": "0.1.0",
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"type": "module",
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"description": "Second-brain foundation (SB-S0) — the brain/ scaffold initialiser, the two-layer profile.md line-grammar (parse/serialize round-trip), the lossless+idempotent user-profile fold, and the canonical entity-id + provenance module. Deterministic, pure-where-it-matters, TDD. No loop, no ingest logic, no connector (later slices).",
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"scripts": {
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"build": "tsc",
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"test": "node --import tsx --test tests/*.test.ts",
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"start": "node --import tsx src/cli.ts"
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},
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"devDependencies": {
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"@types/node": "^22.0.0",
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"tsx": "^4.19.0",
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"typescript": "^5.7.0"
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}
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}
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