docs(01-02): complete provider registry plan

- SUMMARY.md: schema validation + embed loader + Aho-Corasick registry
- STATE.md: updated progress (20%), decisions, metrics
- ROADMAP.md: phase 01 in-progress (1/5 summaries)
- REQUIREMENTS.md: marked CORE-02, CORE-03, CORE-06, PROV-10 complete

.planning/STATE.md

@@ -1,3 +1,19 @@
+---
+gsd_state_version: 1.0
+milestone: v1.0
+milestone_name: milestone
+status: planning
+stopped_at: Completed 01-foundation 01-02-PLAN.md
+last_updated: "2026-04-04T21:12:49.099Z"
+last_activity: 2026-04-04 — Roadmap created, 18 phases defined covering 146 v1 requirements
+progress:
+  total_phases: 18
+  completed_phases: 0
+  total_plans: 5
+  completed_plans: 1
+  percent: 20
+---
+
 # Project State
 
 ## Project Reference
@@ -14,11 +30,12 @@ Plan: 0 of ? in current phase
 Status: Ready to plan
 Last activity: 2026-04-04 — Roadmap created, 18 phases defined covering 146 v1 requirements
 
-Progress: [░░░░░░░░░░░░░░░░░░░░] 0%
+Progress: [██░░░░░░░░] 20%
 
 ## Performance Metrics
 
 **Velocity:**
+
 - Total plans completed: 0
 - Average duration: —
 - Total execution time: 0 hours
@@ -30,10 +47,12 @@ Progress: [░░░░░░░░░░░░░░░░░░░░] 0%
 | - | - | - | - |
 
 **Recent Trend:**
+
 - Last 5 plans: —
 - Trend: —
 
 *Updated after each plan completion*
+| Phase 01-foundation P02 | 9 | 2 tasks | 11 files |
 
 ## Accumulated Context
 
@@ -46,6 +65,8 @@ Recent decisions affecting current work:
 - Roadmap: Per-source rate limiter architecture (Phase 9) must precede all OSINT source modules (Phases 10-16)
 - Roadmap: AES-256 encryption added in Phase 1, not post-hoc — avoids migration complexity
 - Roadmap: Verification (Phase 5) requires consent prompt + LEGAL.md — not optional polish
+- [Phase 01-foundation]: Provider YAML in dual locations: providers/ (user-visible) and pkg/providers/definitions/ (embed) — Go embed cannot use '..' paths
+- [Phase 01-foundation]: Aho-Corasick built with DFA=true at NewRegistry() for O(n) keyword pre-filtering across all providers
 
 ### Pending Todos
 
@@ -60,6 +81,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-04
-Stopped at: Roadmap written to .planning/ROADMAP.md; ready to begin Phase 1 planning
+Last session: 2026-04-04T21:12:49.095Z
+Stopped at: Completed 01-foundation 01-02-PLAN.md
 Resume file: None