Kjell Tore Guttormsen 8c927198f5 feat(linkedin-studio): second-brain SB-S0 foundation — brain/ scaffold + profile fold + id/provenance spine [skip-docs]

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

2026-06-23 14:05:24 +02:00

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User Profile Configuration (populated test fixture)

Synthetic, domain-general fixture for SB-S0 fold tests. Mirrors the P1 labeled scalars + P2 expertise group of config/user-profile.template.md, with every placeholder replaced by a distinctive filled value. NOT a real person.

PERSONALIZATION SETTINGS

User Profile Context

Name: Jordan Avery Current Role: Senior Data Engineer Organization: Northwind Analytics Industry/Domain: Data infrastructure

Important Disclaimer: All articles and posts are written as a private individual. Views expressed are personal and do not represent any employer.

Core Expertise Areas (5 topics):

Streaming data pipelines
Data contracts
Cost-aware warehousing
Observability for ETL
Team data literacy

Target Audience:

Primary: Data engineers at scale-ups
Secondary: Engineering managers
Geographic focus: Nordics

Voice & Style Profile

Signature Elements:

Key frameworks you've developed: The Contract-First Pipeline
Recurring themes/angles: Boring tech that ships
Phrases you commonly use: "ship the boring thing"
Topics to AVOID: Crypto

Writing Quirks & Preferences:

Preferred post length: Medium 1,200-1,800
Emoji usage: Minimal 1-2
Question style CTAs: Sometimes
Use of personal anecdotes: Always
Technical depth: Advanced

Language: English

Strategic Context

Current LinkedIn Status:

Follower count: 2,400
90-day growth goal: 4,000
Posting frequency: 3x week
Optimal posting times: Tue/Thu 08:00 CET

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