Runs MSVC build only when CMakeLists.txt, third_party/, or workflow
files change. Catches platform-specific build failures (like the
libspecbleach MSVC issue from #796) before release instead of at
tag time.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Runs MSVC build only when CMakeLists.txt, third_party/, or workflow
files change. Catches platform-specific build failures (like the
libspecbleach MSVC issue from #796) before release instead of at
tag time.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

… PR 8) (#2953)

Eight docs leave the top-level docs/ tree, partitioned by purpose:

docs/archive/ — historical planning/session notes, kept for grep
context:
  - issue-2136-feasibility-report.md     (PR #2759, shipped)
  - issue-2136-implementation-plan.md    (PR #2759, shipped)
  - TX_SYNC_FIX_REPORT.md                 (PR #353, RadioModel.cpp still
    references the report by name)
  - aether-dsp-session-notes.md          (#796 maintainer notebook)

docs/data/ — reference fixtures (not bundled, not runtime):
  - SSDR.settings + SmartSDR.exe.config   (SmartSDR parity reference)
  - rxapplet_mode_settings.csv            (per-mode RX control research)
  - vfo_mode_filters.csv                  (VFO filter-preset research;
    VfoWidget.cpp comment updated to new path)

Kept in docs/ (still active):
  - audio_test_plan.md  (17 KB, edited 2026-04-29, ongoing test plan)
  - profile-import-export-manual-checklist.md (PR #2641 QA checklist)

Both new dirs include a one-paragraph README explaining the convention
so a future maintainer doesn't have to guess what belongs where.

Cross-references audited:
  - AppSettings.h:9 mentions "SmartSDR's SSDR.settings" as a concept,
    not a path — no change.
  - RadioModel.cpp:3991 references TX_SYNC_FIX_REPORT by name — no
    change, file is findable via grep/find.
  - VfoWidget.cpp:3324 carried a literal "docs/vfo_mode_filters.csv"
    path — updated to docs/data/.

Verified with a clean local Release build (cmake --build … --target
AetherSDR exits 0).

After this PR, docs/ contains 18 markdown files (architecture/user
docs), the assets/ subdir from PR 5, and the new archive/ + data/
subdirs — matches the acceptance criteria in the cleanup plan.

Principle I.

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

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

## Summary

Drop the \`check-paths\` allow-list job that gated \`check-windows\` and
\`check-macos\` based on a hand-maintained set of files. Both
cross-platform CI builds now run on every PR.

## Why

The path-filter approach has been a chronic leaker. Every time a new
file gained a platform-guarded branch (\`#ifdef Q_OS_WIN\`, \`#ifdef
Q_OS_MAC\`, \`HAVE_PIPEWIRE\`, etc.) that wasn't on the allow-list, CI
silently skipped the relevant cross-platform check and the regression
surfaced at release tag time. The follow-up was always to add another
path to the filter — and then the same class of issue would resurface
elsewhere a few PRs later.

Pattern receipts:
- #796 — original \"MSVC issue slipped past CI\" lesson
- #2633 → #2662 — macOS \`m_daxBridge\` reference inside macOS-only
guard, missed
- #2670 — Windows behavior change not exercised by CI
- #2671 — added MainWindow.cpp/.h to filter after a miss
- #2929 → #3052 — WASAPI mono-mic recovery landed unverified; added
AudioEngine.cpp/.h
- #3210 — re-added AudioEngine after a relapse
- v26.5.3 — ClientPhaseRotator.cpp \`M_PI\` MSVC break slipped through
- #3241 (yesterday) — CwSidetonePortAudioSink WASAPI fix; entire
\`#ifdef Q_OS_WIN\` block never compiled by CI because the file wasn't
on the filter

## Trade-off

Cost: ~15-20 min of GitHub Actions runner time per PR (Windows + macOS
in parallel, both cached aggressively — cold ~5 min, warm ~2-3 min).

Benefit: a whole class of release-time regression we've been paying for
repeatedly.

## Test plan

- [x] YAML valid (\`python3 -c 'import yaml; yaml.safe_load(...)'\`)
- [ ] Confirm \`check-windows\` and \`check-macos\` actually run on this
PR (no longer marked \`skipping\`)
- [ ] Both pass

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

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

…sdr#2933, PR 8) (aethersdr#2953)

Eight docs leave the top-level docs/ tree, partitioned by purpose:

docs/archive/ — historical planning/session notes, kept for grep
context:
  - issue-2136-feasibility-report.md     (PR aethersdr#2759, shipped)
  - issue-2136-implementation-plan.md    (PR aethersdr#2759, shipped)
  - TX_SYNC_FIX_REPORT.md                 (PR aethersdr#353, RadioModel.cpp still
    references the report by name)
  - aether-dsp-session-notes.md          (aethersdr#796 maintainer notebook)

docs/data/ — reference fixtures (not bundled, not runtime):
  - SSDR.settings + SmartSDR.exe.config   (SmartSDR parity reference)
  - rxapplet_mode_settings.csv            (per-mode RX control research)
  - vfo_mode_filters.csv                  (VFO filter-preset research;
    VfoWidget.cpp comment updated to new path)

Kept in docs/ (still active):
  - audio_test_plan.md  (17 KB, edited 2026-04-29, ongoing test plan)
  - profile-import-export-manual-checklist.md (PR aethersdr#2641 QA checklist)

Both new dirs include a one-paragraph README explaining the convention
so a future maintainer doesn't have to guess what belongs where.

Cross-references audited:
  - AppSettings.h:9 mentions "SmartSDR's SSDR.settings" as a concept,
    not a path — no change.
  - RadioModel.cpp:3991 references TX_SYNC_FIX_REPORT by name — no
    change, file is findable via grep/find.
  - VfoWidget.cpp:3324 carried a literal "docs/vfo_mode_filters.csv"
    path — updated to docs/data/.

Verified with a clean local Release build (cmake --build … --target
AetherSDR exits 0).

After this PR, docs/ contains 18 markdown files (architecture/user
docs), the assets/ subdir from PR 5, and the new archive/ + data/
subdirs — matches the acceptance criteria in the cleanup plan.

Principle I.

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

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

## Summary

Drop the \`check-paths\` allow-list job that gated \`check-windows\` and
\`check-macos\` based on a hand-maintained set of files. Both
cross-platform CI builds now run on every PR.

## Why

The path-filter approach has been a chronic leaker. Every time a new
file gained a platform-guarded branch (\`#ifdef Q_OS_WIN\`, \`#ifdef
Q_OS_MAC\`, \`HAVE_PIPEWIRE\`, etc.) that wasn't on the allow-list, CI
silently skipped the relevant cross-platform check and the regression
surfaced at release tag time. The follow-up was always to add another
path to the filter — and then the same class of issue would resurface
elsewhere a few PRs later.

Pattern receipts:
- aethersdr#796 — original \"MSVC issue slipped past CI\" lesson
- aethersdr#2633 → aethersdr#2662 — macOS \`m_daxBridge\` reference inside macOS-only
guard, missed
- aethersdr#2670 — Windows behavior change not exercised by CI
- aethersdr#2671 — added MainWindow.cpp/.h to filter after a miss
- aethersdr#2929 → aethersdr#3052 — WASAPI mono-mic recovery landed unverified; added
AudioEngine.cpp/.h
- aethersdr#3210 — re-added AudioEngine after a relapse
- v26.5.3 — ClientPhaseRotator.cpp \`M_PI\` MSVC break slipped through
- aethersdr#3241 (yesterday) — CwSidetonePortAudioSink WASAPI fix; entire
\`#ifdef Q_OS_WIN\` block never compiled by CI because the file wasn't
on the filter

## Trade-off

Cost: ~15-20 min of GitHub Actions runner time per PR (Windows + macOS
in parallel, both cached aggressively — cold ~5 min, warm ~2-3 min).

Benefit: a whole class of release-time regression we've been paying for
repeatedly.

## Test plan

- [x] YAML valid (\`python3 -c 'import yaml; yaml.safe_load(...)'\`)
- [ ] Confirm \`check-windows\` and \`check-macos\` actually run on this
PR (no longer marked \`skipping\`)
- [ ] Both pass

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

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