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02-vault-core-and-rendering 2026-02-28T21:45:00Z passed 17/17 must-haves verified false

Phase 2: Vault Core and Rendering Verification Report

Phase Goal: Users can read a markdown document — all standard constructs render correctly and content is scrollable Verified: 2026-02-28T21:45:00Z Status: PASSED Re-verification: No — initial verification


Goal Achievement

Observable Truths

The 17 must-have truths are drawn directly from the three plan frontmatter must_haves sections.

Plan 02-01 Truths (Foundation)

# Truth Status Evidence
1 pulldown-cmark, syntect, and syntect-tui compile without errors alongside existing ratatui 0.30 VERIFIED cargo build succeeds with 1 pre-existing warning (signals.rs dead_code), zero errors; Cargo.toml has all three dependencies at specified versions
2 vault.rs can load a markdown file from a vault path and return structured success/missing/error states VERIFIED load_document() uses std::fs::read_to_string, matches on ErrorKind::NotFound for Missing, all other errors to ReadError, success to Loaded
3 highlighter.rs initializes syntect once and can highlight a code string into Vec<Line<'static>> with CGA 16-color palette VERIFIED OnceLock<SyntaxSet> and OnceLock<ThemeSet> statics; highlight_code() returns Vec<Line<'static>> with all-owned Span strings; full 16-entry CGA palette in syntect_color_to_cga()

Plan 02-02 Truths (Renderer)

# Truth Status Evidence
4 Headings H1-H6 render with distinct CGA colors and decorators (H1=LightCyan+══, H2=LightYellow+──, H3-H6 color-only) VERIFIED start_heading() assigns correct CGA colors per level; end_heading() emits .repeat(w) for H1, .repeat(w) for H2, nothing for H3-H6
5 Bold text uses Modifier::BOLD, italic uses Modifier::ITALIC, inline code uses LightCyan styling VERIFIED Tag::Strong pushes Modifier::BOLD, Tag::Emphasis pushes Modifier::ITALIC, Event::Code emits Style::default().fg(Color::LightCyan) span
6 Fenced code blocks render with rounded box-drawing borders (╭─╮│╰─╯) and syntax-highlighted content via highlighter.rs VERIFIED emit_code_block() at line 439 uses , , , , ; calls crate::highlighter::highlight_code(code_buf, lang) at line 445
7 Ordered and unordered lists render with bullets/numbers and proper indentation per nesting depth VERIFIED list_counters: Vec<Option<u64>> tracks nesting; bullets use // per depth level; ordered lists format {n}. and increment counter
8 Blockquotes render with a yellow │ left border and gray content VERIFIED flush_line() prepends Span::styled("│ ".repeat(depth), Style::default().fg(Color::Yellow)) and re-colors content spans to Color::Gray when in_blockquote
9 Horizontal rules render as full-width ─── lines in DarkGray VERIFIED Event::Rule emits "─".repeat(state.width as usize) styled Color::DarkGray
10 Images render as [IMAGE: alt text] placeholders in DarkGray+DIM VERIFIED End(TagEnd::Image) emits format!("[IMAGE: {}]", alt) with Color::DarkGray and Modifier::DIM
11 GFM tables render with full box-drawing grid (┌┬┐├┼┤└┴┘) and bold LightCyan header row VERIFIED emit_table() uses build_border() with ,,,,,,,,; header uses Color::LightCyan + Modifier::BOLD

Plan 02-03 Truths (App Integration)

# Truth Status Evidence
12 App starts and displays index.md content from the configured vault_path VERIFIED main.rs calls vault::load_document(&app_config.vault_path, "index.md"), renders via renderer::render_markdown(), passes to App::new()
13 When index.md is missing, user sees a BBS-style error screen with box-drawing border and helpful message VERIFIED draw_error_screen() renders a centered red-bordered Block with "*** SYSTEM ERROR ***" in LightRed+BOLD, path in Yellow, hint in DarkGray
14 User can scroll content with j/k (one line), arrow keys (one line), PgUp/PgDn (full page) VERIFIED handle_key() matches KeyCode::Char('j') | KeyCode::Down, Char('k') | KeyCode::Up, PageDown, PageUp; each calls scroll_down/scroll_up with 1 or page_height()
15 Status bar at the bottom shows filename on the left and keyboard hints on the right in reverse video VERIFIED draw_status_bar() builds left+padding+right Line, renders Paragraph with Style::default().add_modifier(Modifier::REVERSED)
16 Terminal resize re-renders content at new width and reflows layout without crashing VERIFIED Event::Resize(w, _h) triggers handle_resize(w) which calls crate::renderer::render_markdown(content, new_width) and clamps scroll_offset to new max_scroll()
17 Quit behavior from Phase 1 (q key, double Ctrl+C) is preserved VERIFIED handle_key() retains the double Ctrl+C state machine with DOUBLE_PRESS_WINDOW; q key guarded by !self.is_login_shell; show_goodbye() and ShutdownReason unchanged

Score: 17/17 truths verified


Required Artifacts

Artifact Min Lines Status Details
Cargo.toml VERIFIED Contains pulldown-cmark = "0.13.1", syntect = { version = "5.3", default-features = false, features = ["default-fancy"] }, syntect-tui = "3.0"
src/vault.rs VERIFIED VaultDocument enum with Loaded, Missing, ReadError variants; load_document() with std::fs::read_to_string
src/highlighter.rs VERIFIED OnceLock<SyntaxSet>, OnceLock<ThemeSet>; init_highlighter(), syntax_set(), theme_set(), syntect_color_to_cga(), highlight_code(); full 16-entry CGA palette; LinesWithNewlines iterator
src/renderer.rs 200 VERIFIED 703 lines; render_markdown() public API; RenderState struct; emit_code_block() and emit_table() free functions; handles all Event variants
src/app.rs VERIFIED DocumentState enum; App with Phase 2 fields; draw(), draw_status_bar(), draw_error_screen(), handle_key(), handle_resize(), scroll helpers; all Phase 1 behavior preserved
src/main.rs VERIFIED All 7 mod declarations; highlighter::init_highlighter() before render_markdown(); vault loading with all three match arms; raw_content passed to App::new()

From To Via Status Details
src/highlighter.rs syntect OnceLock<SyntaxSet> and OnceLock<ThemeSet> statics WIRED Lines 10-11: static SYNTAX_SET: OnceLock<SyntaxSet> and static THEME_SET: OnceLock<ThemeSet>
src/vault.rs std::fs read_to_string for markdown file loading WIRED Line 31: match std::fs::read_to_string(&full_path)
src/renderer.rs pulldown-cmark TextMergeStream consuming all Event variants WIRED Line 696: let parser = TextMergeStream::new(Parser::new_ext(input, opts))
src/renderer.rs src/highlighter.rs highlight_code() called for fenced code blocks WIRED Line 445: crate::highlighter::highlight_code(code_buf, lang)
src/renderer.rs ratatui::text Produces Vec<Line<'static>> with Span styling WIRED Return type of render_markdown() and all emitter functions confirmed Vec<Line<'static>>
src/main.rs src/highlighter.rs init_highlighter() called before App::new() WIRED Line 32: highlighter::init_highlighter() at step 3a, before step 7 App::new()
src/main.rs (via app.rs) src/vault.rs load_document() called in startup to get markdown content WIRED Line 41: vault::load_document(&app_config.vault_path, "index.md"); result passed as DocumentState to App::new()
src/app.rs src/renderer.rs render_markdown() called on resize to re-render at new width WIRED Line 204: crate::renderer::render_markdown(content, new_width) in handle_resize()
src/app.rs ratatui::widgets::Paragraph Paragraph::new(lines).scroll((offset, 0)) for scrollable content WIRED Lines 332-334: Paragraph::new(lines.clone()).scroll((self.scroll_offset, 0))

Note on plan 02-03 key link app.rs -> vault.rs: The plan specified load_document() called from src/app.rs, but the implementation calls it from src/main.rs and passes the result as DocumentState to App::new(). This is a valid architectural choice — cleaner separation of concerns — and the goal truth ("App starts and displays index.md content") is fully satisfied. The load path is: main.rs -> vault::load_document() -> renderer::render_markdown() -> App::new(DocumentState::Loaded).


Requirements Coverage

Requirement Source Plan Description Status Evidence
REND-01 02-02 User sees H1-H6 headers with visual hierarchy and styling SATISFIED start_heading() assigns distinct CGA colors per heading level; H1/H2 get decorator lines
REND-02 02-02 User sees bold, italic, and inline code rendered with terminal styling SATISFIED Modifier::BOLD for Strong, Modifier::ITALIC for Emphasis, Color::LightCyan for inline code
REND-03 02-01, 02-02 User sees fenced code blocks with syntax highlighting SATISFIED emit_code_block() calls highlight_code() via crate::highlighter; CGA-mapped colors applied
REND-04 02-02 User sees ordered and unordered lists with proper indentation SATISFIED list_counters vec tracks nesting; // for unordered; {n}. for ordered; 2-space indent per level
REND-05 02-02 User sees blockquotes with visual distinction SATISFIED Yellow border per nesting depth; content spans re-colored to Color::Gray
REND-06 02-02 User sees horizontal rules as visual separators SATISFIED Event::Rule emits full-width line in Color::DarkGray followed by blank line
REND-07 02-02 User sees [IMAGE: alt text] placeholders for images SATISFIED Image alt text collected, emitted as [IMAGE: {alt}] in Color::DarkGray + Modifier::DIM
REND-08 02-02 User sees GFM tables rendered with aligned columns SATISFIED emit_table() renders full box-drawing grid; pad_cell() handles Left/Right/Center alignment
REND-09 02-02 User sees box-drawing borders on content panels SATISFIED Code blocks: ╭─╮│╰─╯ borders; Tables: ┌┬┐├┼┤└┴┘ grid; both use Color::DarkGray/Color::Cyan borders
REND-10 02-01, 02-02 User sees CGA-era retro color theme (cyan/magenta/green on dark) SATISFIED Full 16-entry CGA palette in syntect_color_to_cga(); heading colors use LightCyan, LightYellow, LightGreen, Green, Cyan, DarkGray
NAV-05 02-03 User can scroll content with j/k, arrows, PgUp/PgDn SATISFIED All four key combos handled in handle_key(); scroll_down()/scroll_up() with saturating_add/sub and max_scroll() clamping
NAV-06 02-01, 02-03 User lands on index.md as the entry point SATISFIED vault::load_document(&app_config.vault_path, "index.md") called unconditionally on startup
NAV-07 02-03 User sees graceful error page when a linked file is not found SATISFIED draw_error_screen() renders BBS-style centered error box with red border, "*** SYSTEM ERROR ***" header, path in Yellow, hint in DarkGray
NAV-08 02-03 User sees keyboard hints in status bar SATISFIED draw_status_bar() shows q:Quit j/k:Scroll PgUp/PgDn:Page (non-login) or Ctrl+C×2:Quit j/k:Scroll PgUp/PgDn:Page (login shell) in reverse video
NAV-09 02-03 App handles terminal resize without breaking layout SATISFIED Event::Resize(w, _h) in event loop calls handle_resize(w) which re-renders markdown at new width and clamps scroll offset

All 15 required requirement IDs accounted for. No orphaned requirements.

REQUIREMENTS.md traceability table marks REND-03, REND-10, NAV-05, NAV-06, NAV-07, NAV-08, NAV-09 as "Complete" and REND-01, REND-02, REND-04, REND-05, REND-06, REND-07, REND-08, REND-09 as "Pending" — the checkbox status in REQUIREMENTS.md is inconsistent with actual implementation, but the traceability table correctly maps all 15 IDs to Phase 2. The code implements all 15.


Anti-Patterns Found

File Line Pattern Severity Impact
src/renderer.rs 356-358 placeholder string Info Intentional: the [IMAGE: alt text] placeholder is the correct implementation of REND-07, not a stub

No blocker or warning anti-patterns found. cargo build output: 1 pre-existing warning (init_logging dead_code in signals.rs — not introduced by Phase 2), zero errors.


Human Verification Required

The following behaviors require a running terminal session to confirm visually:

1. Markdown Rendering Visual Quality

Test: Create a vault with index.md containing H1-H6 headings, bold/italic text, a fenced code block with rust language tag, an unordered list, a blockquote, a horizontal rule, an image reference, and a GFM table. Run cargo run. Expected: Each element renders with distinct CGA colors; H1 has a decorator, H2 has a decorator; code block has ╭─ rust ─╮ top border with syntax-highlighted content; table has ┌┬┐ grid; blockquote has yellow left border. Why human: Visual styling and color accuracy cannot be verified without a running terminal.

2. Scrolling Feel

Test: Load a document longer than the terminal height. Press j, k, PgDn, PgUp, and arrow keys. Expected: Content scrolls smoothly; scroll stops at top and bottom of document without overshooting. Why human: max_scroll() clamping logic is verified in code, but the user experience of scrolling (responsiveness, no flicker) requires a live terminal.

3. Status Bar Display

Test: Observe the bottom line of the terminal. Expected: Filename appears left-aligned, keyboard hints right-aligned, entire bar is reverse-video (text and background inverted). Quit prompt replaces hints when Ctrl+C is pressed once. Why human: Modifier::REVERSED rendering depends on terminal emulator support; visual verification required.

4. Missing index.md Error Screen

Test: Configure vault_path to a directory without index.md. Run cargo run. Expected: Centered box with red border, *** SYSTEM ERROR *** in bright red, vault directory path in yellow, Create index.md to begin. hint in dark gray. Why human: Visual centering calculation and color rendering require live terminal.

5. Terminal Resize Re-render

Test: While running with a wide terminal, resize the terminal window to half width. Expected: Horizontal rules shrink to new width; code block borders reflow; no crash; scroll offset clamped if needed. Why human: Resize event behavior requires interactive session.


Commits Verified

All commit hashes documented in SUMMARYs confirmed present in git log:

Hash Plan Description
7622d41 02-01 Task 1 feat(02-01): add Phase 2 deps and vault file-loading module
8d45a7c 02-01 Task 2 feat(02-01): add syntax highlighter module with CGA color mapping
9e6f79c 02-02 Task 1 feat(02-02): build core markdown renderer with inline and block elements
8690d2a 02-02 Task 2 feat(02-02): add code block borders with syntax highlighting and GFM table grid
9cdfc6b 02-03 Task 1 feat(02-03): rework app.rs with document display, scrolling, status bar, error screen
ddf9ebc 02-03 Task 2 feat(02-03): wire main.rs with highlighter init, vault loading, and renderer

Gaps Summary

No gaps. All 17 must-have truths are verified against the actual codebase. All 15 requirement IDs are implemented. Build is clean. Key links are wired. No stub patterns detected.


Verified: 2026-02-28T21:45:00Z Verifier: Claude (gsd-verifier)