fix: normalize legacy Claude Code model IDs for image capabilities

[Olusammytee]

Summary

• normalize �piModelId in Claude Code handler using
  ormalizeClaudeCodeModelId
• ensure legacy dated IDs (for example claude-opus-4-5-20251101) resolve to canonical Claude Code model metadata
• add regression tests in extension and webview model selection hooks

Why

Claude Code legacy dated model IDs can surface in persisted settings. Normalizing them consistently prevents capability mismatches and keeps image support flags correct.

Fixes #4573

[changeset-bot]

🦋 Changeset detected

Latest commit: 222fdd8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
kilo-code	Patch

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[Copilot]

Pull request overview

This PR fixes issue #4573 where Claude Opus 4.5 with the dated model ID claude-opus-4-5-20251101 incorrectly showed "Does not support images" in the Claude Code provider. The fix ensures that legacy dated Claude Code model IDs are normalized to their canonical forms before accessing model metadata, preventing capability mismatches.

Changes:

• Added model ID normalization in the Claude Code API handler using normalizeClaudeCodeModelId()
• Added regression tests to verify dated model IDs resolve to correct canonical models with proper capabilities
• Ensured consistency between backend provider and frontend model selection hooks

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/api/providers/claude-code.ts	Added normalization of model IDs in getModel() method to handle legacy dated model IDs
src/api/providers/tests/claude-code.spec.ts	Added test case verifying dated model IDs normalize correctly with proper image support
webview-ui/src/components/ui/hooks/tests/useSelectedModel.spec.ts	Added test case verifying webview properly normalizes dated Claude Code model IDs

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

The PR cleanly integrates normalizeClaudeCodeModelId into the ClaudeCodeHandler.getModel() method, replacing the previous Object.hasOwn guard with the normalization function that handles legacy dated model IDs (e.g., claude-opus-4-5-20251101 → claude-opus-4-5). This preserves model capabilities like image support that were previously lost when dated aliases didn't match the canonical model map.

Key observations:

• The .trim() addition on apiModelId is a good defensive improvement
• The removal of the Object.hasOwn guard is safe because normalizeClaudeCodeModelId always returns a valid ClaudeCodeModelId (with fallback to default)
• Both backend and frontend test coverage is included for the normalization behavior
• The changeset is well-written and user-focused

Files Reviewed (4 files)

• .changeset/calm-forks-pretend.md - Changeset
• src/api/providers/__tests__/claude-code.spec.ts - New test for legacy model ID normalization
• src/api/providers/claude-code.ts - getModel() updated to use normalizeClaudeCodeModelId
• webview-ui/src/components/ui/hooks/__tests__/useSelectedModel.spec.ts - New test for UI hook normalization

[kevinvandijk]

Thank you!