fix(cli): pin scaffolded uipath-langchain to the current minor release

[andreibalas-uipath]

Summary

Fixes UV-16117 for uipath-langchain. Counterpart of UiPath/uipath-python#1869 and #1874.

uipath new (and uip codedagent new, which bridges to it) wrote a hard-coded uipath-langchain[bedrock,vertex]>=0.10.0, <0.11.0 into the scaffolded pyproject.toml, so uv sync downgraded the freshly created project to a stale release.

Changes

• _cli/cli_new.py: the pin is generated from a single reviewed constant, UIPATH_LANGCHAIN_SCAFFOLD_MINOR = "0.16" → uipath-langchain[bedrock,vertex]>=0.16.0, <0.17.0. Deliberately a constant (same approach as #1874): a guard test fails on every minor bump so the scaffold (pin, template, hints) gets reviewed alongside the release instead of drifting silently.
• Per review, the CLI no longer advertises a dependency installation command; instead the quickstart guide installs uipath-langchain[bedrock,vertex] up front (the scaffolded agent needs the extras for uipath init). Post-scaffold hints drop the stray leading space.
• tests/cli/test_new.py (new):
  • test_scaffold_pin_admits_installed_version — asserts the constant equals the installed major.minor (via packaging.version.Version); fails CI on a minor bump with instructions to review the scaffold and bump the constant.
  • test_scaffolded_pin_contains_installed_version — runs the real scaffold and asserts the written specifier admits the installed package.
• pyproject.toml: add packaging>=24.0 to the dev group (used by tests); bump version 0.16.12 → 0.16.13.

Testing

• uv run pytest tests/cli — 55 passed; just lint and mypy clean.
• Manual end-to-end with the built wheel in a fresh venv: uipath new → pin >=0.16.0, <0.17.0 → uv sync (no downgrade, extras installed) → uipath init → uipath run agent '{"topic": "UiPath"}' succeeded against LLM Gateway (exit code 0).

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR fixes a scaffolding regression in the uipath-langchain CLI where uipath new generated a hard-coded uipath-langchain[bedrock,vertex] version range that could cause uv sync to downgrade a freshly scaffolded project. It updates the scaffold to derive the dependency pin from the installed uipath-langchain version and adds regression tests to prevent future drift.

Changes:

• Derive the scaffolded uipath-langchain[bedrock,vertex] pin from the installed package version (minor-range constraint), with a warning + fallback when the version is unknown.
• Improve post-scaffold hints to recommend uv sync before uipath init.
• Add a new CLI test suite validating pin derivation behavior (including prerelease stripping and fallback guard), and add packaging to the dev dependency group.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
src/uipath_langchain/_cli/cli_new.py	Computes scaffold dependency pin from installed uipath-langchain version; updates hints shown after scaffolding.
tests/cli/test_new.py	Adds regression tests for derived pinning, prerelease stripping, unknown-version fallback, and an end-to-end scaffold check.
pyproject.toml	Bumps package version and adds packaging>=24.0 to dev deps (used by new tests).
uv.lock	Updates lockfile for the version bump and the added packaging dev dependency.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

tests/cli/test_new.py:55

• This assertion currently relies on a regex match group from the raw TOML text. If the scaffold formatting changes (while still producing a valid project.dependencies entry), the test will fail even though behavior is correct. Consider parsing pyproject.toml via tomllib and extracting the uipath-langchain requirement via Requirement, then checking req.specifier.contains(...).

        content = (tmp_path / "pyproject.toml").read_text()
        match = PIN_RE.search(content)
        assert match is not None, content
        installed = version("uipath-langchain")
        assert SpecifierSet(match.group(1)).contains(installed, prereleases=True), (
            f"scaffolded pin '{match.group(1)}' does not contain installed "
            f"uipath-langchain {installed}"

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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