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feat: move vault cache to ~/.laputa/cache/ and make writes atomic

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Cache files are now stored outside the vault directory at
~/.laputa/cache/<vault-hash>.json, preventing them from polluting
the user's git repo. Writes use atomic tmp+rename to avoid corruption.
Legacy .laputa-cache.json files are auto-migrated and cleaned up on
first run.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Test
2026-03-08 22:58:00 +01:00
parent 5c85bc41f6
commit aef98f17eb
7 changed files with 295 additions and 255 deletions
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5
docs/ABSTRACTIONS.md
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@@ -207,12 +207,13 @@ type SidebarSelection =
`vault::scan_vault_cached(path)` wraps scanning with git-based caching:
1. Reads `.laputa-cache.json` if it exists
1. Reads cache from `~/.laputa/cache/<vault-hash>.json` (external to vault)
2. Compares cache version, vault path, and git HEAD commit hash
3. If cache is valid and same commit → only re-parse uncommitted changed files
4. If different commit → use `git diff` to find changed files → selective re-parse
5. If no cache → full scan
6. Writes updated cache after every scan
6. Writes updated cache atomically (write to `.tmp`, then rename)
7. On first run, migrates any legacy `.laputa-cache.json` from inside the vault
### Frontmatter Manipulation (Rust)