feat(mem0-plugin): complete all Tier 1-8 spec items, add scheduled dream and bash error detection

- Add /mem0:dream --schedule support via Claude Code /schedule command
  with local launchd/cron fallback for non-cloud users
- Add /mem0:digest --schedule and file output to ~/.mem0/weekly-digest.md
  with digest-history.log for trend tracking
- Add on_post_commit.sh PostToolUse hook: interactive prompt after git
  commit asking user to save change as memory with category suggestion
- Add on_bash_output.sh PostToolUse hook: detects stack traces and error
  patterns in bash command output, injects mem0 search rubric for prior
  occurrences (complements existing user prompt error detection)
- Fix session-end report: now shows per-category breakdown
  "wrote 3 memories (decision 2, anti_pattern 1)" matching spec
- Wire new hooks into all 3 platforms (Claude Code, Cursor, Codex)
- Add post_commit and bash_error telemetry events
- Add CTO demo testing guide with tier-by-tier manual test steps

mem0-plugin/scripts/telemetry.py

@@ -140,6 +140,11 @@ def main() -> int:
             properties["source_detail"] = arg.split("=", 1)[1]
         elif arg.startswith("--tool="):
             properties["tool"] = arg.split("=", 1)[1]
+        elif arg.startswith("--files_count="):
+            try:
+                properties["files_count"] = int(arg.split("=", 1)[1])
+            except ValueError:
+                pass
 
     emit(event_type, properties)
     return 0