feat: Search Before Building — builder ethos + skill integrations (v0.9.5.0) (#298) * feat: ETHOS.md — gstack builder philosophy Standalone document capturing the four principles: The Golden Age, Boil the Lake, Search Before Building, and Build for Yourself. Introduces the three-layer knowledge framework (tried-and-true, new-and-popular, first-principles) and the Eureka Moment concept — when first-principles reasoning reveals conventional wisdom is wrong. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: Search Before Building preamble section + CLAUDE.md Add generateSearchBeforeBuildingSection(ctx) to gen-skill-docs.ts. Every workflow skill now gets a compact router section covering: - Three layers of knowledge (tried-and-true, new-and-popular, first-principles) - Eureka moment format and jq-based JSONL logging - WebSearch fallback clause - ETHOS.md reference via ctx.paths.skillRoot resolver Also adds compact "Search before building" section to CLAUDE.md. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: skill-specific Search Before Building integrations 8 template changes: - /office-hours: Phase 2.75 Landscape Awareness (WebSearch + three-layer synthesis) - /plan-eng-review: Step 0 search check with layer provenance annotations - /investigate: external pattern search + search escalation on hypothesis failure - /plan-ceo-review: Landscape Check before scope challenge - /review: search-before-recommending for fix patterns - /qa-only: WebSearch in allowed-tools - /design-consultation: three-layer synthesis backport in Phase 2 Step 3 - /retro: eureka moment tracking from ~/.gstack/analytics/eureka.jsonl All search steps include WebSearch fallback clause. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat: v0.9.5.0 — Builder Ethos (CHANGELOG + VERSION + TODOS) ETHOS.md + Search Before Building across all workflow skills. Deferred: first-time intro flow (blocked on blog post). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: address Codex review — sanitize search, privacy gate, ETHOS.md sidecar Three fixes from adversarial Codex review: - /investigate: sanitize error messages before searching (strip hostnames, IPs, file paths, SQL, customer data). Skip search if unsanitizable. - /office-hours: add privacy gate before landscape search. Use generalized category terms, never the user's specific product name or stealth idea. - setup: link ETHOS.md into .agents/skills/gstack/ sidecar so workspace- local Codex sessions can find the builder philosophy. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: sanitize Phase 2 external pattern search in /investigate The Phase 2 external search also sent raw error messages to WebSearch. Apply same sanitization rule as Phase 3 search escalation. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * docs: sync documentation with shipped changes - ARCHITECTURE.md: preamble now handles 5 things (add Search Before Building) - CLAUDE.md: add ETHOS.md to project structure tree - README.md: add ETHOS.md to docs table Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>