docs(04-03): complete GitSource plan

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 04-01-PLAN.md
-last_updated: "2026-04-05T12:15:22.450Z"
+stopped_at: Completed 04-03-PLAN.md
+last_updated: "2026-04-05T12:19:11.974Z"
 last_activity: 2026-04-05
 progress:
   total_phases: 18
   completed_phases: 3
   total_plans: 23
-  completed_plans: 19
+  completed_plans: 20
   percent: 20
 ---
 
@@ -26,7 +26,7 @@ See: .planning/PROJECT.md (updated 2026-04-04)
 ## Current Position
 
 Phase: 04 (input-sources) — EXECUTING
-Plan: 2 of 5
+Plan: 3 of 5
 Status: Ready to execute
 Last activity: 2026-04-05
 
@@ -66,6 +66,7 @@ Progress: [██░░░░░░░░] 20%
 | Phase 03-tier-3-9-providers P01 | 3m | 2 tasks | 32 files |
 | Phase 03 P08 | 2min | 1 tasks | 1 files |
 | Phase 04 P01 | 1m | 1 tasks | 2 files |
+| Phase 04-input-sources P03 | 6m | 1 tasks | 2 files |
 
 ## Accumulated Context
 
@@ -86,6 +87,7 @@ Recent decisions affecting current work:
 - [Phase 02-tier-1-2-providers]: AWS Bedrock verify URL left empty — SigV4 signing deferred to Phase 5 verification engine
 - [Phase 03-tier-3-9-providers]: Keyword-only detection for providers without documented key prefixes (You.com, Unstructured, Runway, Midjourney) to avoid false positives.
 - [Phase 04]: Use 'go mod download' instead of 'go mod tidy' when bootstrapping dependencies ahead of their consumers
+- [Phase 04-input-sources]: GitSource walks heads+tags+remotes+stash with per-OID blob dedup
 
 ### Pending Todos
 
@@ -100,6 +102,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-05T12:15:22.447Z
-Stopped at: Completed 04-01-PLAN.md
+Last session: 2026-04-05T12:19:11.971Z
+Stopped at: Completed 04-03-PLAN.md
 Resume file: None