refactor: extract model download path helpers

[benceruleanlu]

Split A of #1249.

Summary

• Extract model download-path and filename helpers from comfyDownloadManager.ts.
• Preserve compatibility through re-exports.
• Update the template and standalone imports with no behavior change.

Stack

Split	PR	Base	Release gate
A	#1302 — download-path extraction	main	Normal
B	#1303 — desktop login-code auth	A	Packaged RC
C	#1304 — anonymous identity core	B	Normal
D	#1305 — installer website-ID carrier	C	Packaged Windows RC
E	#1306 — Firebase auth consensus	D	Packaged RC

Validation

• pnpm run typecheck
• pnpm run lint
• pnpm run build
• pnpm run test — 2,853 passed, 1 skipped

This mechanical slice can use the normal release path.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: e619513f-0d58-441e-953e-a6d9043c433b

📥 Commits

Reviewing files that changed from the base of the PR and between a1ebe29 and b9b9086.

📒 Files selected for processing (4)

• src/main/lib/comfyDownloadManager.test.ts
• src/main/lib/comfyDownloadManager.ts
• src/main/sources/standalone/templateDownloadGate.test.ts
• src/main/sources/standalone/templateDownloadTask.ts

📝 Walkthrough

Walkthrough

Model filename utilities and installation-aware model existence checks were moved into dedicated modules. ComfyDownloadManager now re-exports compatibility APIs, while standalone template handling uses static imports and dedicated filename utilities.

Changes

Model path resolution and template integration

Layer / File(s)	Summary
Filename utility extraction src/main/lib/downloadFilename.ts, src/main/lib/comfyDownloadManager.ts, src/main/sources/standalone/templateInputAssets.ts, src/main/sources/standalone/templateModels.ts	Allowed extensions and query-parameter stripping are centralized in downloadFilename, with compatibility re-exports retained.
Installation-aware model existence resolution src/main/lib/modelDownloadPaths.ts, src/main/lib/comfyDownloadManager.ts	Model directories, legacy folder variants, extra paths, candidate files, and regular-file checks are handled by modelDownloadPaths; download deduplication uses fileExists.
Standalone template model wiring src/main/sources/standalone/index.ts	Bundled-template handling uses top-level imports for template resolution and model-presence checks instead of dynamic imports.

Sequence Diagram(s)

sequenceDiagram
  participant TemplateCards
  participant areModelsPresent
  participant resolveDownloadContextById
  participant regularFileExists
  TemplateCards->>areModelsPresent: requested models and installationId
  areModelsPresent->>resolveDownloadContextById: resolve installation context
  resolveDownloadContextById-->>areModelsPresent: search context or null
  areModelsPresent->>regularFileExists: check candidate paths
  regularFileExists-->>areModelsPresent: file existence results
  areModelsPresent-->>TemplateCards: presence result

Loading

Possibly related PRs

• Comfy-Org/Comfy-Desktop#1284: Changes the same model-presence path logic used by starter-template model status.

Suggested reviewers: maanilverma

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bl/gtm-93-a-download-path-extraction

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch bl/gtm-93-a-download-path-extraction

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[deepme987]

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