session-memory: Read-before-Edit reflex + curated pattern (WP-0008)

Acts on the #1 friction finding. T01: added a data-cited Read-before-Edit /
re-read-on-stale reflex to AGENTS.md (top error: 'File has not been read yet',
12/27 sessions). T02: captured it as a curated SolutionPattern
(sp-problem-file_not_read-edit, approved/distribution_ready) with real
resolutions + per-flavor hints, so Distribute proposes it across repos/flavors —
closing assess->curate->distribute on a real pattern. Suite 126/126.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

session_memory/distribute/active_patterns.json

@@ -1,4 +1,12 @@
 [
+  {
+    "flavor": "claude",
+    "pattern_id": "sp-problem-file_not_read-edit",
+    "repo": "agentic-resources",
+    "status": "proposed",
+    "updated_at": "2026-06-07T13:26:26Z",
+    "version": "1.0.0"
+  },
   {
     "flavor": "claude",
     "pattern_id": "sp-problem-schema_thrash-schema_load",
@@ -20,7 +28,7 @@
     "pattern_id": "sp-success-clean_pass-outcome",
     "repo": "agentic-resources",
     "status": "proposed",
-    "updated_at": "2026-06-07T13:20:58Z",
+    "updated_at": "2026-06-07T13:26:26Z",
     "version": "1.0.0"
   },
   {