4eca9ca8fd
updateEntry's .map() always returned a new array even when no entry matched, causing unnecessary state changes. During note creation, addEntry uses startTransition (deferred) while markContentPending calls updateEntry synchronously — the entry doesn't exist yet, so the no-op .map() produced a new reference that cascaded into "Maximum update depth exceeded" (which surfaced as React error #185 in the production WKWebView build). The fix makes updateEntry bail out (return prev) when no entry was changed, preventing the spurious state update. Also removes the defensive try-catch from the previous fix attempt and cleans up an unnecessary setToastMessage dependency. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
35 lines
2.4 KiB
Markdown
35 lines
2.4 KiB
Markdown
---
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type: ADR
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id: "0033"
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title: "Subfolder scanning and folder tree navigation"
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status: active
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date: 2026-03-31
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---
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## Context
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[[0032 Status Bar For Git Actions]]
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Supersedes the scanning constraint in [ADR-0006](0006-flat-vault-structure.md) which limited vault indexing to root-level `.md` files plus protected folders (`attachments/`, `assets/`).
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Users with folder-based workflows (PARA, Zettelkasten with folders, project directories) could not see or filter notes by directory. The vault scanner silently ignored all subdirectory `.md` files, making Laputa unsuitable for vaults with any folder structure.
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## Decision
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**Extend the Rust vault scanner to index **`.md`** files in all visible subdirectories, and expose the vault's folder tree via a new **`list_vault_folders`** Tauri command so the sidebar can render a collapsible FOLDERS section.**
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Hidden directories (names starting with `.`, plus `.git` and `.laputa`) are excluded from both scanning and the folder tree.
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## Options considered
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* **Option A** (chosen): Scan all subdirectories with `walkdir`, expose separate `list_vault_folders` command — simple, no schema changes to VaultEntry, folder tree is lightweight and independent of the entry cache.
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* **Option B**: Add a `folder` field to VaultEntry and derive the tree on the frontend — couples folder metadata to the entry cache, complicates cache invalidation when folders are created/deleted without file changes.
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* **Option C**: Keep flat scanning, add a "virtual folders" feature that groups by path prefix from frontmatter — doesn't solve the core problem of missing notes in subdirectories.
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## Consequences
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* All `.md` files in the vault are now indexed regardless of depth — vaults with many non-note `.md` files (e.g. node_modules) will see spurious entries. Mitigation: hidden directories are already excluded; users can add a `.laputaignore` in the future if needed.
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* The git-based cache in `cache.rs` already uses `walkdir` for change detection, so this change aligns scanning with caching.
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* `SidebarSelection` gains a new `{ kind: 'folder'; path: string }` variant — all exhaustive switches on selection kind must handle it.
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* ADR-0006's "flat vault" principle is relaxed: notes can now live in subdirectories. Type definitions still live in `type/` at the root.
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* Re-evaluate if users request recursive folder filtering (currently only direct children are shown when a folder is selected).
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