[#52] Sync → Ignore patterns - #70

Resolves #52

Feature

There's no way to exclude a folder or file pattern from sync, every file the vault reader sees becomes a candidate for push or pull. Users will want to keep some folders local only (a private notes folder, a large attachments folder) without excluding them from Obsidian entirely.

Needs a settings field for glob style ignore patterns, applied before takeSnapshot/planSync ever sees those paths.

Changes

Added the ability to exclude files and folders from sync via two layers:

1. Built-in local_ convention, any path segment starting with local_ is always excluded from sync, no configuration needed
2. User-configurable glob patterns, stored in settings, editable via a textarea in the Sync section of the settings tab. Supports * (any chars in segment), ** (any depth), ? (single char)
   Filtering happens at the vault reader level so ignored files never enter the snapshot system. Previously-synced files that become ignored will appear as deletions and be cleaned from remote on next sync.

UI

Look of the UI in the settings tab for geod, users will be able to add their glob style patterns line by line. Similar to how we do in a .gitignore file.

Tests

Added new tests in ignore.test.ts, and they all pass

Greptile Summary

This PR adds two-layer ignore filtering to the vault reader: a built-in local_ prefix convention and user-configurable glob patterns stored in settings and exposed via a new Sync section in the settings tab. Filtering happens at the createObsidianReader level so ignored files never enter the snapshot or sync planning pipeline.

• src/ignore.ts provides hasLocalPrefix, globToRegex, shouldIgnore, and pre-compilation helpers (compilePatterns, shouldIgnoreCompiled); all are well-tested in src/ignore.test.ts.
• Settings normalization safely coerces missing or malformed ignorePatterns to [], and settingsEqual is extended for array comparison; previously-flagged UI bugs in renderSyncSection are resolved in this revision.
• All createObsidianReader call sites in main.ts and the integration test pass the live ignorePatterns, so patterns take effect on the next sync immediately after save.

Confidence Score: 5/5

• Safe to merge — the filtering logic is pure and well-tested, settings migration is backwards-compatible, and all reader call sites are updated correctly.
• The glob engine, normalization, and UI wiring are all correct. The only finding is a missing blank line between two top-level function definitions in settings.ts, which has no runtime impact.
• No files require special attention.

Important Files Changed

_{Reviews (11): Last reviewed commit: "Merge branch 'main' into feat/ignore-pat..." | Re-trigger Greptile}

Context used:

• Context used - .agents/skills/typescript-as-go/SKILL.md (source)
• Context used - AGENTS.md (source)