feat: introduce opus 4.7

[viper151]

• Bump claude-agent-sdk from 0.2.59 to 0.2.116
• Forward process.env to SDK subprocess so ANTHROPIC_BASE_URL and other env vars work
• Add claude-opus-4-6 as a distinct mode

Summary by CodeRabbit

• New Features

  • Added support for Claude Opus 4.6 model selection.

• Chores

  • Updated Claude Agent SDK dependency to latest version.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 259243a3-fc68-4387-915b-97d7a15579b7

📥 Commits

Reviewing files that changed from the base of the PR and between d0f37fd and b0d8ea4.

📒 Files selected for processing (1)

• server/tsconfig.json

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📝 Walkthrough

Walkthrough

This PR bumps the Claude agent SDK dependency to version 0.2.116, modifies environment and executable path handling in the SDK integration layer, adds a new Claude Opus 4.6 model option, and adjusts TypeScript module path resolution configuration from a server-local to project-root baseline.

Changes

Cohort / File(s)	Summary
Dependency Update package.json	Updated @anthropic-ai/claude-agent-sdk from ^0.2.59 to ^0.2.116 to access newer SDK features.
SDK Integration server/claude-sdk.js	Modified environment handling to always set sdkOptions.env as a shallow copy of process environment; replaced conditional CLAUDE_CLI_PATH assignment with unconditional fallback defaulting to process.env.CLAUDE_CLI_PATH || 'claude'.
Model Constants shared/modelConstants.js	Added new model option { value: "claude-opus-4-6", label: "Opus 4.6" } to CLAUDE_MODELS.OPTIONS.
Build Configuration server/tsconfig.json	Updated TypeScript baseUrl from . (server directory) to .. (project root) and adjusted @/\\* path alias mapping from \\* to server/\\* for consistent module resolution.

Possibly related PRs

• PR #208: Directly modifies the same SDK integration code (server/claude-sdk.js) with environment and CLI path handling changes, plus bumps the matching dependency.
• PR #446: Updates the same @anthropic-ai/claude-agent-sdk package dependency and touches server/claude-sdk.js for model-usage logging enhancements.

Poem

🐰 The rabbit hops with glee today,
New Opus bounds forth to play,
Paths align from root so true,
SDK climbs to version new,
Env flows smooth, executable guides the way!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title states 'introduce opus 4.7' but the actual change adds 'claude-opus-4-6', not opus 4.7. This is a mismatch between the stated title and the actual implementation.	Update the title to accurately reflect the change, such as 'feat: introduce opus 4.6' or 'feat: add claude-opus-4-6 model option'.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/upgrade-claude-agent-sdk

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🧹 Nitpick comments (1)

server/claude-sdk.js (1)

204-206: Stale comment after adding claude-opus-4-6.

The "Valid models" comment still lists only the alias set (sonnet, opus, haiku, opusplan, sonnet[1m]) and doesn't reflect the newly added claude-opus-4-6 option. Consider updating it (or removing the enumeration and pointing to CLAUDE_MODELS.OPTIONS as the source of truth) so it doesn't drift further.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@server/claude-sdk.js` around lines 204 - 206, Update the stale "Valid models"
comment near sdkOptions.model to reflect the current source of truth instead of
an out-of-date enum; either enumerate the new clau­de-opus-4-6 option or
(preferably) replace the hard-coded list with a short comment pointing to
CLAUDE_MODELS.OPTIONS / CLAUDE_MODELS.DEFAULT so future changes (e.g., additions
like clau­de-opus-4-6) are maintained in one place; locate the comment adjacent
to sdkOptions.model and CLAUDE_MODELS and modify it accordingly.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@server/claude-sdk.js`:
- Around line 204-206: Update the stale "Valid models" comment near
sdkOptions.model to reflect the current source of truth instead of an
out-of-date enum; either enumerate the new clau­de-opus-4-6 option or
(preferably) replace the hard-coded list with a short comment pointing to
CLAUDE_MODELS.OPTIONS / CLAUDE_MODELS.DEFAULT so future changes (e.g., additions
like clau­de-opus-4-6) are maintained in one place; locate the comment adjacent
to sdkOptions.model and CLAUDE_MODELS and modify it accordingly.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 57dcd84a-f189-4658-9d77-f5203931fc9d

📥 Commits

Reviewing files that changed from the base of the PR and between 89b754d and be08149.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (3)

• package.json
• server/claude-sdk.js
• shared/modelConstants.js