docs(readme): refresh with 2026-04-15 → 2026-05-02 hardening sprint

[EtanHey]

@orcClaude — overnight maintenance README refresh. Please review when you boot.

Summary

• Adds a new Recent Hardening (2026-04-15 → 2026-05-02) section between BrainBar and Data Sources
• Every claim traces to a merged PR or to the open in-flight PR feat(brainbar): restore dashboard flow UI on Phase B main #251 — no aspirational language
• Inline BrainBar build-script note pointing at the canonical-build guards (feat(brainbar): stamp builds with git commit + UTC time in Info.plist #264, feat(brainbar): refuse non-canonical builds — reject worktree + dirty installs #265)

Verified facts (each line maps to a PR I read via gh pr view)

• Search recall: Fix enrichment retrieval quality regressions #240, MMR post-retrieval dedup for brain_search (R86 Q4) #242, Wire batch enrich to Gemini Batch API preview flow #243, fix: drop legacy unique content_hash index #245, Fix queue fallback for Swift brain_store #261, feat: add lexical defense dictionary exports #262, fix: harden BrainLayer FTS recall across all three layers #263
• BrainBar UX: feat: overhaul BrainBar dashboard UX #246, fix: preserve BrainBar MCP initialize handshake under backpressure #247, feat: BrainBar → MenuBarExtra(.window) + live-state sparklines + full-width hero (Linear UX overhaul part 1) #248, fix(brainbar): KG force-sim CPU pegging (task #22) #249
• Phase B preventive infra: orchestrator#58, orchestrator#60, brainlayer#264, brainlayer#265 (all merged 2026-05-01)
• Test gates: test: add stale index regression fixture #255, test: add brainlayer run_tests.sh orchestrator #256, chore: add pre-push regression gate #257, test: add Deepchecks regression harness #259, fix: pre-push hook exit 0 on success path #260
• Security: security: Swift MCPRouter adds ToolAnnotations to all 11 tools (cyberMaster H1) #253
• In flight: PR feat(brainbar): restore dashboard flow UI on Phase B main #251 — NSPanel revival, trigram FTS5 startup-safety guard (10K-chunk threshold), /tmp/brainbar.sock pub/sub plane preserved

Out of scope

• No badge updates (test counts in badges may be slightly stale; deferred until Python+Swift counts are re-verified post-feat(brainbar): restore dashboard flow UI on Phase B main #251)
• No architectural pivots — presentation freeze respected

Test plan

• orcClaude reviews phrasing + accuracy
• No PR merge until reviewed (per overnight maintenance guardrail)

🤖 Generated with Claude Code

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Note

Low Risk
Low risk documentation-only change; no code paths or runtime behavior are modified.

Overview
Updates README.md to expand the BrainBar section with build-provenance details (canonical checkout/clean tree enforcement and Info.plist build stamping).

Adds a new Recent Hardening (2026-04-15 → 2026-05-02) section summarizing merged reliability/security/test-gate work with links to the relevant PRs, plus an in-flight note for PR #251.

^{Reviewed by Cursor Bugbot for commit f197916. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Update README to document hardening sprint changes from 2026-04-15 to 2026-05-02

Refreshes README.md with a new 'Recent Hardening' section summarizing merged work across search recall, BrainBar reliability, deployment infrastructure, test gates, and security annotations for Swift MCPRouter tools. Also updates the BrainBar description to note that the build script rejects non-canonical or dirty checkouts and stamps Info.plist with GitCommit, GitDescribe, and BuildTimeUTC. Includes an 'In flight' subsection covering ongoing work such as a resizable dashboard panel, trigram FTS5, and KG atlas improvements.

^{Macroscope summarized f197916.}

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: c457e6cc-1a8e-47b2-aaa0-85fa312a1f6a

📥 Commits

Reviewing files that changed from the base of the PR and between 06e1e4a and f197916.

📒 Files selected for processing (1)

• README.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/readme-2026-05-02-refresh

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[EtanHey]

Held as draft per orcClaude (s:9). The maintenance pass content has /never-fabricate-clean receipts and can be salvaged, but the right hands for finalizing this README are the brainlayer repo workers themselves — pending one of them taking it over after the reliability sprint cascade (Phases 2-5 / PR #251 merge → Phase 4 rebases) settles. Ref: docs.local/plans/2026-05-02-brainlayer-reliability-hardening/README.md § Phase 6 + status log.

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