fix: Chroma connection errors and remove dead last_user_message code (#525)

* fix: distinguish connection errors from collection-not-found in ChromaSync

Previously, ensureCollection() caught ALL errors from chroma_get_collection_info
and assumed they meant "collection doesn't exist". This caused connection errors
like "Not connected" to trigger unnecessary collection creation attempts.

Now connection-related errors are re-thrown immediately instead of being
misinterpreted as missing collections.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix: improve error handling for Chroma connection and collection creation

* fix: remove dead last_user_message from summarize flow

The last_user_message field was extracted from transcripts but never used.
In Claude Code transcripts, "user" type messages are mostly tool_results,
not actual user input. The user's original request is already stored in
user_prompts table.

This removes the false warning "Missing last_user_message when queueing
summary" which was complaining about missing data that didn't exist and
wasn't needed.

Changes:
- summary-hook: Only extract last_assistant_message
- SessionRoutes: Remove last_user_message from request body handling
- SessionManager.queueSummarize: Remove lastUserMessage parameter
- PendingMessage interface: Remove last_user_message field
- SDKSession interface: Remove last_user_message field
- All agents: Remove last_user_message from buildSummaryPrompt calls

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* build artifacts for plugin

* Enhance error handling across multiple services

- Improved logging in `BranchManager.ts` to capture recovery checkout failures.
- Updated `PaginationHelper.ts` to log when file paths are plain strings instead of valid JSON.
- Enhanced error logging in `SDKAgent.ts` for Claude executable detection failures.
- Added logging for plain string handling in `SearchManager.ts` for files read and edited.
- Improved logging in `paths.ts` for git root detection failures.
- Enhanced JSON parsing error handling in `timeline-formatting.ts` with previews of failed inputs.
- Updated `transcript-parser.ts` to log summary of parse errors after processing transcript lines.
- Established a baseline for error handling practices in `error-handling-baseline.txt`.
- Documented error handling anti-pattern rules in `CLAUDE.md` to prevent silent failures and improve code quality.

* Add error handling anti-pattern detection script and guidelines

- Introduced `detect-error-handling-antipatterns.ts` to identify common error handling issues in TypeScript code.
- Created comprehensive documentation in `CLAUDE.md` outlining forbidden patterns, allowed patterns, and critical path protection rules.
- Implemented checks for empty catch blocks, logging practices, and try-catch block sizes to prevent silent failures and improve debugging.
- Established a reporting mechanism to summarize detected anti-patterns with severity levels.

* feat: add console filter bar and log line parsing with filtering capabilities

- Introduced a console filter bar with options to filter logs by level and component.
- Implemented parsing of log lines to extract structured data including timestamp, level, component, and correlation ID.
- Added functionality to toggle individual and all levels/components for filtering.
- Enhanced log line rendering with color coding based on log level and special message types.
- Improved responsiveness of the filter bar for smaller screens.

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/services/context-generator.ts

@@ -200,8 +200,7 @@ function extractPriorMessages(transcriptPath: string): { userMessage: string; as
           }
         }
       } catch (parseError) {
-        // Expected: malformed JSON lines in transcript
-        // Not logging - this loops through many lines, logging each would be excessive
+        logger.debug('PARSER', 'Skipping malformed transcript line', { lineIndex: i }, parseError as Error);
         continue;
       }
     }
@@ -229,8 +228,7 @@ export async function generateContext(input?: ContextInput, useColors: boolean =
       try {
         unlinkSync(VERSION_MARKER_PATH);
       } catch (unlinkError) {
-        // Marker might not exist - expected during first run
-        // Not logging - this is a normal case during initial setup
+        logger.debug('SYSTEM', 'Marker file cleanup failed (may not exist)', {}, unlinkError as Error);
       }
       logger.error('SYSTEM', 'Native module rebuild needed - restart Claude Code to auto-fix');
       return '';