BUILD PR: exact helper move to src/shared using target map.

Author: DavidQ

docs/dev/CODEX_COMMANDS.md

@@ -1 +1,6 @@
-# No Codex command in this PLAN bundle
+MODEL: GPT-5.3-codex
+REASONING: high
+COMMAND:
+Execute BUILD_PR_SHARED_EXTRACTION_02_EXACT_HELPER_MOVE exactly.
+Use target map only.
+Output zip to <project folder>/tmp/.

docs/dev/COMMIT_COMMENT.txt

@@ -1,8 +1 @@
-PLAN: shared extraction (02) target map preparation
-
-- captured required exact-target mapping before first helper move
-- identified initial helper buckets
-- prevented vague BUILD scope
-
-next:
-- BUILD_PR_SHARED_EXTRACTION_02_EXACT_HELPER_MOVE once exact files are named
+BUILD PR: exact helper move to src/shared using target map.

docs/dev/NEXT_COMMAND.txt

@@ -1 +1 @@
-PLAN_PR_DEBUG_SURFACES_SERVER_RUNTIME_ISOLATION
+Proceed to APPLY_PR after validation.

docs/dev/reports/change_summary.txt

@@ -1,5 +1 @@
-CHANGE SUMMARY
-
-- captured the exact-target-map requirement before first helper move
-- preserved small-step workflow
-- prevented vague BUILD scope
+Helper extraction to shared.

docs/dev/reports/file_tree.txt

@@ -1,2 +1 @@
-src/engine/
-(engine removed)
+src/shared populated per target map

docs/dev/reports/validation_checklist.txt

@@ -1,7 +1,4 @@
-VALIDATION CHECKLIST
-
-[x] docs-only plan
-[x] no code changes
-[x] no file moves
-[x] exact-target requirement captured
-[x] next BUILD blocked until exact source files are named
+- Matches target map
+- No duplicates
+- Imports updated
+- Build passes

docs/pr/BUILD_PR_SHARED_EXTRACTION_02_EXACT_HELPER_MOVE.md

@@ -0,0 +1,21 @@
+# BUILD_PR_SHARED_EXTRACTION_02_EXACT_HELPER_MOVE
+
+Purpose: Move duplicate helpers into src/shared using ONLY the target map.
+
+Source of Truth:
+PLAN_PR_SHARED_EXTRACTION_02_TARGET_MAP
+
+Rules:
+- DO NOT scan repo
+- ONLY use listed files
+- NO API changes
+- NO new helpers
+
+Instructions:
+- Move helpers exactly as defined in target map
+- Update imports only
+
+Acceptance:
+- No duplicates remain
+- Imports valid
+- Build passes