fix(deps): cap pydantic-ai in examples extra below 2.0

[shashi-stackone]

Summary

• Cap pydantic-ai in the examples optional-dependency group at <2.0.0, matching the existing pydantic-ai-slim>=1.83.0,<2.0.0 cap on the pydantic-ai extra.
• Regenerate uv.lock to record the narrowed specifier. Resolution is unchanged (still pydantic-ai 1.83.0) — only the declared constraint moves. CI runs uv sync --all-extras --locked, which hard-fails on a lockfile whose constraints have drifted from pyproject.toml.
• Closes an inconsistency left from fix(deps): Avoid DOA-pin mcp below 2.0.0 ahead of upstream MCP v2 release #194, which capped mcp at <2.0.0 but left the examples extra unbounded against a breaking pydantic-ai v2.

PR created for the release fix

#194 merged with a squash subject that had no conventional-commit type prefix, so release-please parsed zero releasable commits and never opened a release PR. This PR's fix: prefix restores the release train; the resulting 2.10.1 will also carry #194's mcp<2.0.0 pin out to PyPI.

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Summary by cubic

Cap pydantic-ai in the examples extra to <2.0.0 and update uv.lock to match. This aligns with the pydantic-ai extra, avoids v2 breakage, and keeps CI lockfile checks passing.

^{Written for commit 1a5a101. Summary will update on new commits.}

[Copilot]

Pull request overview

Caps pydantic-ai in the examples optional dependency group to <2.0.0 to prevent accidental upgrades to a breaking v2 release and to keep pyproject.toml consistent with the checked-in uv.lock metadata for locked installs.

Changes:

• Update pyproject.toml examples extra to pydantic-ai>=1.83.0,<2.0.0.
• Regenerate uv.lock so the recorded requires-dist constraint for the examples marker matches the updated specifier.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
pyproject.toml	Caps pydantic-ai under the examples optional-dependencies group to <2.0.0.
uv.lock	Updates the locked metadata constraint for pydantic-ai under extra == 'examples' to include <2.0.0.

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[cubic-dev-ai]

No issues found across 2 files

<sub>Auto-approved: Caps pydantic-ai below v2 to prevent breakage, matching existing constraints; no behavioral or operational change.

Re-trigger cubic</sub>