#20378: refactor: add best-effort comments to empty catch blocks

# Summary This PR adds descriptive comments to 33 empty catch blocks across 15 files, improving code readability and documenting intentional error suppression. ## Changes - Added `// Best-effort:` comments to explain why errors are intentionally suppressed - Categories of changes: - Cleanup operations (file handles, connections) - Fallback attempts (try alternative approaches) - Optional features (non-critical operations) ## Files Changed - `src/agents/minimax-vlm.ts` - `src/agents/model-auth.ts` - `src/agents/workspace.ts` - `src/browser/cdp.ts` - `src/canvas-host/a2ui.ts` - `src/commands/chutes-oauth.ts` - `src/commands/status.scan.ts` - `src/media-understanding/runner.entries.ts` - `src/media/read-response-with-limit.ts` - `src/memory/internal.ts` - `src/memory/manager-embedding-ops.ts` - `src/memory/manager-sync-ops.ts` - `src/memory/manager.ts` - `src/memory/sync-stale.ts` - `src/telegram/bot-handlers.ts` ## Testing - TypeScript compilation: ✅ Passed - Unit tests: ✅ 7537 passed, 2 pre-existing failures (unrelated) <!-- greptile_comment --> <h3>Greptile Summary</h3> This PR adds `// Best-effort:` comments to 33 previously-empty catch blocks across 15 files, documenting intentional error suppression. Additionally, import statements are reordered in ~9 files to place `type` imports before value imports. - The catch-block comments are a welcome readability improvement and align with the AGENTS.md guideline to "add brief code comments for tricky or non-obvious logic." - The import reordering is not mentioned in the PR description but appears throughout the changeset. Per AGENTS.md: "Group related changes; avoid bundling unrelated refactors." Consider splitting the import reordering into a separate commit or mentioning it in the PR description for clarity. - One comment in `src/memory/manager-embedding-ops.ts` ("insert will overwrite anyway") may be inaccurate given the plain `INSERT` without `ON CONFLICT` used for the `vec0` virtual table. - No runtime behavior changes; all modifications are comments-only and import reordering. <h3>Confidence Score: 4/5</h3> - This PR is safe to merge — it only adds comments to catch blocks and reorders imports, with no runtime behavior changes. - Score of 4 reflects that all changes are non-functional (comments and import ordering), so there is no risk of runtime breakage. Deducted one point because the import reordering is an undocumented change bundled with the stated goal, and one comment may be technically inaccurate. - src/memory/manager-embedding-ops.ts (potentially inaccurate comment about INSERT overwrite behavior) _{Last reviewed commit: ae26b2b} <!-- greptile_other_comments_section --> **Context used:** - Context from `dashboard` - CLAUDE.md ([source](https://app.greptile.com/review/custom-context?memory=fd949e91-5c3a-4ab5-90a1-cbe184fd6ce8)) <!-- /greptile_comment -->