feat(admin): paste allowed model lists

[steebchen]

Summary

• add an explicit paste-list dialog alongside manual allowed-model selection
• accept newline, comma, space, semicolon, JSON-style, and provider-prefixed model IDs
• preserve existing selections, remove duplicates, and block unknown model IDs with actionable feedback
• cover list parsing with focused unit tests

Verification

• pnpm format
• pnpm build
• pnpm exec vitest run ee/admin/src/lib/provider-model-list.spec.ts --no-file-parallelism
• Playwright flow covering list paste, duplicate removal, manual selection, unknown IDs, and light/dark themes

Screenshots

Light

Before	After

Dark

Before	After

Paste states

Valid list	Unknown ID feedback

Summary by CodeRabbit

• New Features

  • Added a dialog for administrators to paste multiple allowed model IDs at once.
  • Supports newline-, comma-, space-, and semicolon-separated lists, including JSON-style arrays.
  • Automatically removes duplicates and recognizes provider-prefixed model IDs.
  • Displays unknown model IDs and prevents submission until they are corrected.
  • Repositioned self-test and model-verification controls below the model selector.

• Tests

  • Added coverage for parsing, duplicate removal, provider prefixes, and unknown models.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 68373c34-18be-465d-80f3-c84a3dd65ac6

📥 Commits

Reviewing files that changed from the base of the PR and between 270f492 and ea34ec5.

📒 Files selected for processing (3)

• ee/admin/src/components/provider-credentials-manager.tsx
• ee/admin/src/lib/provider-model-list.spec.ts
• ee/admin/src/lib/provider-model-list.ts

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Walkthrough

Adds parsing and validation for pasted provider model IDs. Integrates a dialog into the allowed-models form. The dialog handles delimiters, duplicates, provider prefixes, unknown IDs, and existing selections.

Changes

Allowed model pasting

Layer / File(s)	Summary
Model list parsing and validation ee/admin/src/lib/provider-model-list.ts, ee/admin/src/lib/provider-model-list.spec.ts	Adds parseProviderModelList and ParsedProviderModelList. The parser handles mixed delimiters, JSON-style arrays, provider prefixes, duplicates, and unknown model IDs. Tests cover these cases.
Allowed-models dialog integration ee/admin/src/components/provider-credentials-manager.tsx	Adds PasteAllowedModelsDialog, connects it to the provider catalogue and current selections, and moves the self-test and model-verification controls below the selector.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to ea34e

This PR adds a localized paste-list workflow for allowed models with duplicate removal and unknown-ID feedback; no actionable merge-blocking risk remains after normal checks and review.

Sequence Diagram(s)

sequenceDiagram
  participant Administrator
  participant PasteAllowedModelsDialog
  participant parseProviderModelList
  participant ProviderCatalogue
  Administrator->>PasteAllowedModelsDialog: Paste model IDs
  PasteAllowedModelsDialog->>parseProviderModelList: Parse input
  parseProviderModelList->>ProviderCatalogue: Validate model IDs
  ProviderCatalogue-->>parseProviderModelList: Known and unknown IDs
  parseProviderModelList-->>PasteAllowedModelsDialog: Return parsed IDs
  PasteAllowedModelsDialog-->>Administrator: Show validation result

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Possibly related PRs

• theopenco/llmgateway#3418: Extends the model allowlist UI with paste parsing and validation.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding support for pasting allowed model lists in the admin interface.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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 docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-allowed-models-dialog

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