feat: paint the TUI from the theme and route first runs into setup

[N4M3Z]

Paint the TUI from the resolved theme, show the workspace facts in the status bar, and route an unconfigured root into setup.

• src/tui/styles.rs: one Palette derived from theme::current(); the five tones carry the meaning and a new light flag on each theme picks light or dark surfaces. Accessor functions replace the constants; every named Color:: in the TUI goes through them.
• Status bar: deck name, bound target, and one glyph per enabled provider (✓ current, ↑ outdated, ✗ needs repair, ~ modified, · not installed). Detection runs once at load through the shared registry.
• First run: after a scan that finds no deck and no modules, a panel names the root and rune setup, rune config set deck, rune tui --source; the footer points at setup.
• Help overlay: title carries the version and the close keys; groups and keys use the theme.
• Closes tasks 1.5 and 2.3 of herdr-theme-system. New change tui-first-run, decision CLI-0036.

Verified with rune tui --snapshot on an empty root and on the deck. 1365 tests, clippy clean.

Release Notes

• tui: derive the palette from the configured theme, light themes included
• tui: show deck, target, and provider states in the status bar
• tui: open a first-run panel that leads into rune setup when no deck is configured
• tui: name the close keys and version in the help overlay

https://claude.ai/code/session_01Fds3tf5rS1Ep47q5DGhsr3

Note

Derive TUI styles from theme palette and add first-run setup panel

• Introduces a Palette struct in styles.rs that maps the current theme to light/dark TUI colors. Replaces hardcoded colors across all TUI renderers with shared palette accessors.
• Adds a first-run panel in app.rs that guides users to setup when an empty dashboard is detected after scanning finishes.
• Updates the TUI status bar to show bound-target labels and provider deployment states, omitting disabled providers.
• Adds a light_background flag to ThemeTones in theme.rs to drive palette surface and text roles.
• Risk: Changing all hardcoded TUI colors to palette-derived values means any untested rendering path may display unexpected colors or low contrast. Review Palette::from_theme branches and renderer migrations in app.rs.

^{Macroscope summarized 972e088.}

[coderabbitai]

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[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR adds a new first-run TUI workflow and startup provider/target detection while replacing styling across many existing TUI surfaces. The resulting user-facing and startup behavior changes are broader than a small isolated UI adjustment.

Notes:

• Macroscope's correctness review did not run, so approvability was decided on eligibility alone.

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[runeseer]

🚫 [runeseer] _{reported by reviewdog 🐶}
High — A failed scan leaves the view empty with scan_state back at Idle, so is_first_run reports true and the TUI tells the user there is no deck instead of showing the scan error.

• src/tui/app.rs:884 the scan-error arm sets scan_state = ScanState::Idle and stores the message in palette_error while self.view stays the empty dashboard.
• src/tui/app.rs:1437 the first-run footer replaces footer_text(), the only reader of palette_error, so the stored error never reaches the screen.

[runeseer]

Runeseer review — 1 open finding

Risk	Finding	Location
High	Scan failure renders as the first-run no-deck panel	src/tui/app.rs:724

Request changes. A scan that fails ends with an empty view and an idle scan state, so the new first-run panel claims there is no deck and the recorded scan error never reaches the screen.

• The theme-driven palette itself is consistent: every replaced fixed color maps onto a theme tone.
• Minor: the widened status bar can push the scan and validation counts off a narrow terminal, since padding clamps to zero.

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1 open · Reviewed 972e0888 · review run · $1.58 · 2m37s · 32 turns

[runeseer]

@N4M3Z, the following findings block this head:

• src/tui/app.rs:724: Scan failure renders as the first-run no-deck panel

Choose one action:

• Fix all findings. Then apply review:runeseer to review the new head.
• Apply ignore:runeseer to accept the complete current verdict.