fix(shell): align codemode dependency version

[cjol]

This PR aligns @cloudflare/shell with the workspace-wide @cloudflare/codemode dependency floor.

Why

• pnpm check fails Sherif because published workspace packages declare both >=0.4.0 and >=0.5.0 for @cloudflare/codemode.
• agents and @cloudflare/think already require >=0.5.0, so retaining the older floor only in @cloudflare/shell leaves the workspace inconsistent.

Code Changes

• Raises the @cloudflare/shell runtime dependency on @cloudflare/codemode from >=0.4.0 to >=0.5.0.
• Updates the matching lockfile importer and adds a patch changeset.

Compatibility

Consumers of @cloudflare/shell must use @cloudflare/codemode 0.5.0 or newer.

---

[changeset-bot]

🦋 Changeset detected

Latest commit: 0a9e9a7

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

This PR includes changesets to release 1 package

Name	Type
@cloudflare/shell	Patch

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

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commit: 0a9e9a7