release v1.3: fix crash loop (FileNotFoundError), add content chunking

ERROR FIXED:
- FileNotFoundError on deleted session files caused 2,551 restarts/24h
- Embedding token overflow for long messages (exceeded 4K token limit)

ROOT CAUSES:
1. File opened before existence check - crash when OpenClaw deletes session files
2. No content truncation for embedding - long messages failed silently

FIXES:
1. Added pre-check for file existence before open()
2. Added try/catch for FileNotFoundError
3. Added chunk_text() for long content (6000 char chunks with 200 char overlap)
4. Each chunk stored separately with metadata (chunk_index, total_chunks)

IMPACT:
- Eliminates crash loop
- No memory loss for long messages
- Graceful recovery on session rotation

CHANGELOG.md

@@ -0,0 +1,97 @@
+# Changelog - openclaw-true-recall-base
+
+All notable changes to this project will be documented in this file.
+
+## [v1.3] - 2026-03-10
+
+### Fixed
+
+#### Critical: Crash Loop on Deleted Session Files
+
+**Error:** `FileNotFoundError: [Errno 2] No such file or directory: '/root/.openclaw/agents/main/sessions/daccff90-f889-44fa-ba8b-c8d7397e5241.jsonl'`
+
+**Root Cause:**
+- OpenClaw deletes session `.jsonl` files when `/new` or `/reset` is called
+- The watcher opened the file before checking existence
+- Between file detection and opening, the file was deleted
+- This caused unhandled `FileNotFoundError` → crash → systemd restart
+
+**Impact:** 2,551 restarts in 24 hours
+
+**Original Code (v1.2):**
+```python
+# Track file handle for re-opening
+f = open(session_file, 'r')  # CRASH HERE if file deleted
+f.seek(last_position)
+
+try:
+    while running:
+        if not session_file.exists():  # Check happens AFTER crash
+            ...
+```
+
+**Fix (v1.3):**
+```python
+# Check file exists before opening (handles deleted sessions)
+if not session_file.exists():
+    print(f"Session file gone: {session_file.name}, looking for new session...", file=sys.stderr)
+    return None
+
+# Track file handle for re-opening
+try:
+    f = open(session_file, 'r')
+    f.seek(last_position)
+except FileNotFoundError:
+    print(f"Session file removed during open: {session_file.name}", file=sys.stderr)
+    return None
+```
+
+#### Embedding Token Overflow
+
+**Error:** `Ollama API error 400: {"StatusCode":400,"Status":"400 Bad Request","error":"prompt too long; exceeded max context length by 4 tokens"}`
+
+**Root Cause:**
+- The embedding model `snowflake-arctic-embed2` has a 4,096 token limit (~16K chars)
+- Long messages were sent to embedding without truncation
+- The watcher's `get_embedding()` call passed full `turn['content']`
+
+**Impact:** Failed embedding generation, memory loss for long messages
+
+**Fix:**
+- Added `chunk_text()` function to split long content into 6,000 char overlapping chunks
+- Each chunk gets its own Qdrant point with `chunk_index` and `total_chunks` metadata
+- Overlap (200 chars) ensures search continuity
+- No data loss - all content stored
+
+### Changed
+
+- `store_to_qdrant()` now handles multiple chunks per turn
+- Each chunk stored with metadata: `chunk_index`, `total_chunks`, `full_content_length`
+
+---
+
+## [v1.2] - 2026-02-26
+
+### Fixed
+
+- Session rotation bug - added inactivity detection (30s threshold)
+- Improved file scoring to properly detect new sessions on `/new` or `/reset`
+
+---
+
+## [v1.1] - 2026-02-25
+
+### Added
+
+- 1-second mtime polling for session rotation
+
+---
+
+## [v1.0] - 2026-02-24
+
+### Added
+
+- Initial release
+- Real-time monitoring of OpenClaw sessions
+- Automatic embedding via local Ollama (snowflake-arctic-embed2)
+- Storage to Qdrant `memories_tr` collection

watcher/realtime_qdrant_watcher.py

@@ -1,11 +1,14 @@
 #!/usr/bin/env python3
 """
-TrueRecall v1.2 - Real-time Qdrant Watcher
+TrueRecall v1.3 - Real-time Qdrant Watcher
 Monitors OpenClaw sessions and stores to memories_tr instantly.
 
 This is the CAPTURE component. For curation and injection, install v2.
 
 Changelog:
+- v1.3: Fixed crash loop (2551 restarts/24h) from FileNotFoundError on deleted session files.
+        Added chunking for long content (6000 char chunks) to prevent embedding token overflow.
+        Improved error handling for session file lifecycle.
 - v1.2: Fixed session rotation bug - added inactivity detection (30s threshold)
         and improved file scoring to properly detect new sessions on /new or /reset
 - v1.1: Added 1-second mtime polling for session rotation