chore: remove dead local-STT model download plumbing

[JMak-Security]

Summary

Removes dead local-STT model download plumbing that issue #5462 identified.

download_asset() in �ssets.rs only accepts chat, �ision, embedding, and ts as capabilities (its match statement explicitly errors with "Unknown capability. Use one of: chat, vision, embedding, tts." for anything else). Despite that, download_file_with_progress() still had two leftover match arms handling a "stt" label that can never be reached from that entry point.

The frontend mirrored the same stale type: the capability parameter union in both �pp/src/utils/tauriCommands/localAi.ts and �pp/src/components/settings/panels/LocalModelDebugPanel.tsx still included 'stt', even though ModelDownloadSection.tsx never renders an STT download control.

What's intentionally NOT touched

stt_state / stt_model_id on LocalAiStatus (in ypes.rs) are still live — speech.rs sets stt_state = "ready" after a successful hosted STT transcription. Only the local-model-download trigger path was dead; state tracking for the hosted path is unaffected.

Changes

• src/openhuman/inference/local/service/assets.rs: removed the two unreachable "stt" => ... match arms in download_file_with_progress().
• �pp/src/utils/tauriCommands/localAi.ts: removed 'stt' from the capability union type.
• �pp/src/components/settings/panels/LocalModelDebugPanel.tsx: removed 'stt' from the capability union type in riggerAssetDownload.

Testing

Traced the full call graph by hand (download_asset → download_file_with_progress, and the frontend ModelDownloadSection.tsx UI) to confirm the removed code paths are genuinely unreachable, not just unused-looking. No behavioral change for chat/�ision/embedding/ ts or for hosted STT.

Fixes #5462

Summary by CodeRabbit

• Bug Fixes
  • Removed unsupported speech-to-text asset downloads from local model management.
  • Limited downloadable model capabilities to chat, vision, embeddings, and text-to-speech.
  • Preserved download progress tracking for all supported asset types.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6a2e0fbb-d40f-4a63-89b0-fd6a8e0b22e4

📥 Commits

Reviewing files that changed from the base of the PR and between ffebe1b and 2befeb5.

📒 Files selected for processing (1)

• app/src/components/settings/panels/LocalModelDebugPanel.tsx

🚧 Files skipped from review as they are similar to previous changes (1)

• app/src/components/settings/panels/LocalModelDebugPanel.tsx

Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review.

---

📝 Walkthrough

Walkthrough

The changes remove stt from the frontend asset download capability and stop backend download progress handling from setting the STT state to "downloading".

Changes

Local STT download removal

Layer / File(s)	Summary
Remove STT download capability app/src/components/settings/panels/LocalModelDebugPanel.tsx, app/src/utils/tauriCommands/localAi.ts, src/openhuman/inference/local/service/assets.rs	The frontend capability union no longer accepts stt. Backend download state updates no longer handle the stt label before streaming or during progress updates. TTS and fallback handling remain unchanged.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 2befe

This PR removes unreachable local-STT download plumbing and stale type entries without changing supported downloads or hosted speech transcription, so no actionable merge-blocking risk remains after normal checks and review.

Poem

A rabbit hops where STT once stayed,
The download path is neatly pared.
Chat and vision spring ahead,
TTS keeps hopping in their stead.
No ghostly whisper files are fed.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR removes core and two frontend references, but it does not address the issue-listed ModelDownloadSection, test, or store/coreStateApi STT fields.	Remove the remaining local STT download fields and UI references listed in issue #5462, including ModelDownloadSection, its test, store, and coreStateApi.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies removal of obsolete local STT model-download plumbing, which matches the primary changes.
Out of Scope Changes check	✅ Passed	All reported changes directly support issue #5462 by removing obsolete local STT download capability handling.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[tinysweeper]

tinysweeper found nothing blocking. Approving.

$0.0000 · 0 in / 0 out · 93 embedded · openrouter/openai/text-embedding-3-small

[tinysweeper]

How this change flows

1 changed behaviour across 6 relationships. 5 surrounding behaviours are shown (60 graph nodes walked). 32 further behaviours left out to keep the diagram readable.

flowchart LR
  n0["LocalModelDebugPanelProps<br/>changed"]:::changed
  n1["body"]:::impacted
  n2["loadStatus"]:::impacted
  n3["runtimeEnabled"]:::impacted
  n4["LocalModelDebugPanel"]:::impacted
  n5["ModelStatusSection"]:::impacted
  n1 -->|calls| n2
  n1 -->|uses| n3
  n1 -->|uses| n5
  n4 -->|uses| n0
  n4 -->|uses| n1
  n5 -->|uses| n3
  classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
  classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
  classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
  classDef blocking fill:#67060c,stroke:#f85149,color:#ffffff

Loading

_{Green: changed behaviour. Grey: surrounding behaviour. Arrows name the call, use, implementation, or test relationship. Orange: has findings. Red: has a finding that blocks the merge.}