docs(state): record 04-02 completion and advance to plan 03

Co-authored-by: Cursor <cursoragent@cursor.com>

.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: "2026-09-18T11:42:23.658Z"
+stopped_at: Completed 04-02-PLAN.md
+last_updated: "2026-09-18T11:54:02.503Z"
 last_activity: 2026-09-18
 progress:
   total_phases: 15
   completed_phases: 3
   total_plans: 17
-  completed_plans: 14
+  completed_plans: 15
   percent: 20
 ---
 
@@ -26,11 +26,11 @@ See: .planning/PROJECT.md (updated 2026-09-16)
 ## Current Position
 
 Phase: 04 (cli-scaffolding-i18n-and-mail) — EXECUTING
-Plan: 2 of 4
+Plan: 3 of 4
 Status: Ready to execute
 Last activity: 2026-09-18
 
-Progress: [████████░░] 82%
+Progress: [█████████░] 88%
 
 ## Performance Metrics
 
@@ -59,6 +59,7 @@ Progress: [████████░░] 82%
 | Phase 03 P03-03 | 8 min | 2 tasks | 17 files |
 | Phase 03 P03-04 | 15 min | 2 tasks | 15 files |
 | Phase 04 P01 | 11 min | 3 tasks | 14 files |
+| Phase 04 P04-02 | 10 min | 3 tasks | 11 files |
 
 ## Accumulated Context
 
@@ -105,6 +106,9 @@ Recent decisions affecting current work:
 - [Phase 04]: registry.gen.go is regenerated by scanning Code generated by summer make files, not by rewriting plugin.go — D-12: handwritten plugin.go stays byte-identical; existing plugins get a one-time accessor hint
 - [Phase 04]: make:model table names are vendor_plugin_plural_snake with explicit gormigrate CREATE/DROP TABLE — D-13: timestamps on the model; --no-migration omits only the create-table file
 - [Phase 04]: models sibling-import check runs in build.App before go build and reports plugin ID, file, and import — D-11: limited to classes/controllers/console/jobs/middleware/updates of the same plugin module
+- [Phase 04]: go-i18n is used only to choose a CLDR category label; YAML message text never enters its template engine — D-03: PHP :name placeholders must remain literal
+- [Phase 04]: A per-locale i18n.Bundle is cached so matcher/plural rules follow the requested tag, not the English default bundle — A single English default bundle made Polish few/many look invalid
+- [Phase 04]: Fallback order is requested, parent, app.fallback_locale, then the raw key; framework defaults remain en/en — D-04 D-05: no Polish framework default and no extra core-locale step
 
 ### Pending Todos
 
@@ -126,6 +130,6 @@ Items acknowledged and carried forward from previous milestone close:
 
 ## Session Continuity
 
-Last session: 2026-09-18T11:42:10.258Z
-Stopped at: Completed 04-01-PLAN.md
+Last session: 2026-09-18T11:53:44.731Z
+Stopped at: Completed 04-02-PLAN.md
 Resume file: None