Remove tests asserting specific version constant values

[Copilot]

Tests that assert hardcoded version numbers fail on every version bump, causing unnecessary CI failures.

Changes

• Removed TestVersionConstants (pkg/constants/constants_test.go) - Asserted 18+ version constants matched specific values
• Removed TestCopilotInstallerVersionPassthrough (pkg/workflow/copilot_installer_test.go) - Validated constant passthrough but tied to specific version

Rationale

Version constants change frequently:

// These fail CI every time versions are bumped
{"DefaultCopilotVersion", DefaultCopilotVersion, "0.0.402"},  // Now 0.0.403
{"DefaultCodexVersion", DefaultCodexVersion, "0.94.0"},       // Now 0.97.0
{"DefaultMCPGatewayVersion", DefaultMCPGatewayVersion, "v0.0.98"}, // Now v0.0.99

Remaining tests (TestGenerateCopilotInstallerSteps, TestCopilotInstallerCustomVersion) validate installer logic without version assertions.

Original prompt

Remove the test that checks constant version numbers.

Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 62626808360
Job URL: https://github.com/github/gh-aw/actions/runs/21714590121/job/62626808360

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[Copilot]

Pull request overview

This PR removes tests that assert specific hardcoded version numbers to prevent unnecessary CI failures during version bumps. The changes include removing two test functions that validated exact version values, updating workflow lock files with new version numbers, and enhancing documentation for discussion-related configuration.

Changes:

• Removed TestVersionConstants and TestCopilotInstallerVersionPassthrough tests that asserted exact version strings
• Updated version numbers across all workflow lock files (Copilot CLI 0.0.402→0.0.403, MCP Gateway v0.0.98→v0.0.99, Codex 0.94.0→0.97.0)
• Enhanced documentation for close-older-discussions feature with clearer matching logic

Reviewed changes

Copilot reviewed 90 out of 90 changed files in this pull request and generated no comments.

File	Description
pkg/constants/constants_test.go	Removed TestVersionConstants that asserted 18+ specific version values
pkg/workflow/copilot_installer_test.go	Removed TestCopilotInstallerVersionPassthrough that validated version passthrough
docs/src/content/docs/reference/frontmatter-full.md	Improved documentation for discussion label matching and close-older-discussions behavior
.github/workflows/*.lock.yml (50+ files)	Updated version references consistently across all workflow lock files

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