bbs-md/.planning/phases/04-bbs-polish-and-live-content/04-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
04-bbs-polish-and-live-content	02	ui	walkdir ratatui rust directory-listing virtual-page tab-cycling navigation-history	phase provides 04-01 walkdir = 2.5 in Cargo.toml, navigation history (navigate_back/forward), link_records + Tab-cycling, splash prepend pattern	resolve_wiki_link() returns PathBuf::from('__directory__') for case-insensitive 'Directory' wiki-link DirEntry struct and list_vault_files() in vault.rs using WalkDir::new().sort_by_file_name() navigate_to_directory() method builds tree view via build_directory_lines() and pushes history entry build_directory_lines() emits yellow-bold directory entries and cyan bracketed file links with LinkRecord navigate_back/forward handle __directory__ sentinel — regenerate listing fresh each visit handle_resize() skips re-render for __directory__ pages (fixed-width text, no markdown)	04-03-live-reload	added patterns Virtual page pattern: current_path == '__directory__' sentinel distinguishes virtual pages from real vault documents Directory builder pattern: build_directory_lines() returns (Vec<Line<'static>>, Vec<LinkRecord>) — same shape as render_markdown output Always-fresh pattern: navigate_back/forward call list_vault_files() again on __directory__ — never stale cache Resize guard pattern: early return in handle_resize() for virtual pages avoids crash on None raw_content	created modified src/vault.rs — resolve_wiki_link() Directory sentinel, DirEntry struct, list_vault_files() with WalkDir src/app.rs — navigate_to_directory(), build_directory_lines(), follow_selected_link() sentinel routing, navigate_back/forward __directory__ branches, handle_resize() guard	resolve_wiki_link() sentinel check placed BEFORE rfind('/') split — prevents 'directory' being misinterpreted as a filename build_directory_lines() computes line_index as lines.len() before push — matches renderer pattern for Tab-cycling correctness navigate_back/forward use if/else-if chain (not load_document for __directory__) — avoids spurious Missing document state handle_resize() returns early for __directory__ (raw_content is None for virtual pages) — prevents stale-content confusion link_records for directory entries use is_wiki: false with direct vault_path strings — navigate_to() handles them without resolve step	Virtual page sentinel: __directory__ string as current_path distinguishes virtual page from real file throughout app Tab-cycling for directory entries: same LinkRecord model as rendered markdown — no special-case in key handling Directory listing always regenerated: list_vault_files() called on every visit (forward/back/direct) — always reflects current vault state	LIVE-02	8min	2026-03-01

Phase 4 Plan 02: Directory Listing Summary

Virtual Directory page with WalkDir tree view — yellow-bold dirs, cyan bracketed file links, Tab-cycling, and history back/forward all wired through existing link model

Performance

• Duration: 8 min
• Started: 2026-03-01T00:00:00Z
• Completed: 2026-03-01T00:08:00Z
• Tasks: 2
• Files modified: 2

Accomplishments

• resolve_wiki_link() intercepts case-insensitive "Directory" before filesystem scan and returns PathBuf::from("__directory__") sentinel — zero false positives, works with [[directory]], [[DIRECTORY]], [[Directory]]
• DirEntry struct and list_vault_files() added to vault.rs using WalkDir::new().sort_by_file_name() — alphabetically sorted, skips hidden entries and non-.md files, reports depth for tree indentation
• build_directory_lines() module-level helper produces (Vec<Line<'static>>, Vec<LinkRecord>) matching render_markdown output shape — directories as yellow-bold name/, files as cyan [name] with full LinkRecord for Tab-cycling
• navigate_to_directory() saves/truncates history, builds listing, sets current_path = "__directory__", pushes HistoryEntry — full history participation
• navigate_back() and navigate_forward() detect target_path == "__directory__" and regenerate listing fresh — never stale
• handle_resize() guards with early return for current_path == "__directory__" — prevents crash on None raw_content

Task Commits

Each task was committed atomically:

1. Task 1: Add Directory interception and vault file listing - fe69cf5 (feat)
2. Task 2: Wire directory as virtual page with Tab-cycling navigation - 600b46a (feat)

Files Created/Modified

• src/vault.rs - resolve_wiki_link() Directory sentinel check; DirEntry pub struct; list_vault_files() using walkdir::WalkDir
• src/app.rs - navigate_to_directory(); build_directory_lines(); follow_selected_link() __directory__ routing; navigate_back/forward __directory__ branch; handle_resize() early return guard

Decisions Made

• Sentinel placed at the top of resolve_wiki_link() before rfind('/') — ensures "directory" is never split as a subpath prefix
• build_directory_lines() records line_index = lines.len() before the lines.push() call — matches the renderer's pattern exactly, Tab-cycling targets the correct line
• navigate_back/forward use an if target_path == "__directory__" branch rather than passing "__directory__" to load_document() — avoids a VaultDocument::Missing error state for a valid virtual page
• Directory entries stored with is_wiki: false — navigate_to() handles them directly as vault-relative paths without needing resolve_wiki_link()

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None. walkdir 2.5 was already in Cargo.toml from Plan 01. The DirEntry struct, list_vault_files(), and build_directory_lines() all compiled on the first attempt. The navigate_back/forward branching was straightforward given the clear sentinel convention.

User Setup Required

None - no external service configuration required. The [[Directory]] wiki-link works out of the box in any vault.

Next Phase Readiness

• Phase 4 Plan 03 (live reload via notify) can now start — notify = "6.1" was added to Cargo.toml in Plan 01
• Directory listing is always regenerated fresh on each visit — will automatically reflect vault changes even before live reload is wired
• All navigation paths handle __directory__ sentinel consistently — no special cases needed in Plan 03

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Phase: 04-bbs-polish-and-live-content Completed: 2026-03-01