The Phase 2 mass migration in this PR rewrote setStyleSheet sites in
CwxPanel.cpp and HelpDialog.cpp to route through
ThemeManager::resolve().  Two test executables link those .cpp files
directly but didn't list ThemeManager.cpp + its logging deps, so they
failed at link with:

  undefined reference to AetherSDR::ThemeManager::instance()
  undefined reference to AetherSDR::ThemeManager::resolve(QString const&)

Fix: add ThemeManager.cpp + AppSettings.cpp + LogManager.cpp +
AsyncLogWriter.cpp to both test target source lists.  Same recurring
class of bug already fixed for container_*_test in #3090 — bot/PR
authors miss the downstream test-target link surface when a header
change adds a new function call across translation-unit boundaries.

Verified locally: both targets link clean, both tests pass under
QT_QPA_PLATFORM=offscreen.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

The Phase 2 mass migration in this PR rewrote setStyleSheet sites in
CwxPanel.cpp and HelpDialog.cpp to route through
ThemeManager::resolve().  Two test executables link those .cpp files
directly but didn't list ThemeManager.cpp + its logging deps, so they
failed at link with:

  undefined reference to AetherSDR::ThemeManager::instance()
  undefined reference to AetherSDR::ThemeManager::resolve(QString const&)

Fix: add ThemeManager.cpp + AppSettings.cpp + LogManager.cpp +
AsyncLogWriter.cpp to both test target source lists.  Same recurring
class of bug already fixed for container_*_test in #3090 — bot/PR
authors miss the downstream test-target link surface when a header
change adds a new function call across translation-unit boundaries.

Verified locally: both targets link clean, both tests pass under
QT_QPA_PLATFORM=offscreen.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

…Theme() (aethersdr#3090)

## Summary

Second consumer of the RFC aethersdr#3076 Phase 2 theming infrastructure.
Migrates [src/gui/Theme.h](src/gui/Theme.h) — the central app-wide
stylesheet applied to MainWindow + every floating window — from
hardcoded hex to canonical token references.

## Scope

Theme.h styles the entire base widget palette: \`QWidget\`,
\`QGroupBox\`, \`QPushButton\`, \`QComboBox\` (further overridden by
ComboStyle for finer control), \`QListWidget\`, \`QSlider\`,
\`QMenuBar\`, \`QMenu\`, \`QStatusBar\`, \`QProgressBar\`, \`QSplitter\`
— roughly **30 hex literals** worth of theming across 4 call sites:

1. MainWindow (applyDarkTheme)
2. PanFloatingWindow ctor
3. FloatingContainerWindow ctor
4. MainWindow applet float window setup

## What changed

- **Theme.h** — new \`appStylesheetTemplate()\` returns a \`{{token}}\`
template (35 placeholder substitutions across ~14 widget rules)
- **applyAppTheme(widget)** wraps \`ThemeManager::applyStyleSheet\` so
every top-level window registers in the reverse-map and gets free live
re-theme on theme change
- **darkThemeStylesheet()** retained as a \`[[deprecated]]\` back-compat
shim that routes through \`resolve()\` — bypasses reverse-map
registration but still themed correctly, so the rolling migration can
pick off any remaining sites one at a time
- All 4 call sites converted to \`applyAppTheme(this)\`

## Canonicalisation map (per docs/theming/canonical-tokens.md)

| Old hex | New token |
|---|---|
| \`#0f0f1a\` / \`#111120\` / \`#0a0a14\` | \`color.background.0\` |
| \`#1a2a3a\` / \`#161626\` | \`color.background.1\` |
| \`#203040\` (background context) | \`color.background.1\` |
| \`#203040\` (border context) | \`color.border.strong\` |
| \`#c8d8e8\` | \`color.text.primary\` |
| \`#00b4d8\` | \`color.accent\` |

Sub-perceptual visual shifts at the canonicalised sites — documented as
the intentional design choice.

## Out of scope (follow-ups)

- \`#000\` text-on-accent: still hardcoded. Should become a new
\`color.text.onAccent\` token for Phase 4 Light-theme contrast tuning.
- \`13px\` font size: still hardcoded. Phase 2 follow-up should
canonicalise font sizes (the existing \`font.size.normal\` is 12px which
doesn't match the app baseline).

## Verified locally

- [x] Linux build clean (no new warnings from this change)
- [x] AetherSDR binary launches without crash (offscreen QPA smoke test)
- [x] No visible diff expected today — resolved colours match the
previous hardcoded values within sub-perceptual canonicalisation shifts

## Test plan

- [ ] CI green: build + check-paths + check-windows + CodeQL
- [ ] Visual smoke: launch app, pop out a panadapter
(PanFloatingWindow), open Radio Setup dialog — confirm no visible
regression vs the previous build
- [ ] When Phase 4 Default Light theme lands: confirm theme switch
re-themes MainWindow + every floating window simultaneously without a
restart

73, Jeremy KK7GWY & Claude (AI dev partner)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>