Clarify status/list pattern semantics and add CLI help example validation

[Copilot]

CLI consistency review flagged ambiguity in status/list around what [pattern] accepts and identified the lack of automated validation for help examples. This PR tightens command help language and adds a focused test to continuously validate example correctness.

• Help text consistency (status, list)

  • Updated long descriptions to explicitly state that [pattern] is a case-insensitive name filter.
  • Clarified accepted input forms: workflow ID (basename without .md) or full filename.

• Automated help-example validation

  • Added a new non-integration test (cmd/gh-aw/help_examples_test.go) that:
    • extracts gh aw ... examples from command help text,
    • resolves the referenced command path,
    • verifies all referenced flags exist on that command (including inherited flags),
    • performs lightweight sanity checks for path-like tokens while allowing URLs/placeholders/repo refs.

• Example of the new wording

  The optional pattern argument filters workflows by name (case-insensitive substring match).
  It accepts workflow IDs (basename without .md) or full filenames.

[Copilot]

Pull request overview

Clarifies CLI help text for status/list pattern semantics and introduces a unit test that validates gh aw ... examples embedded in Cobra help output.

Changes:

• Refines status and list long help descriptions for the optional [pattern] argument.
• Adds a non-integration test that extracts gh aw ... examples from command help text and validates referenced commands/flags.
• Updates action pin/lock artifacts to pin docker/metadata-action at the v6 major tag SHA.

Show a summary per file

File	Description
pkg/cli/status.go	Updates status help text to further describe [pattern] input forms.
pkg/cli/list_workflows_command.go	Updates list help text to further describe [pattern] input forms.
cmd/gh-aw/help_examples_test.go	Adds a unit test that parses help examples and validates command/flag correctness.
pkg/workflow/data/action_pins.json	Adds a docker/metadata-action@v6 pin entry.
pkg/actionpins/data/action_pins.json	Adds a docker/metadata-action@v6 pin entry (duplicate data set).
.github/aw/actions-lock.json	Adds a docker/metadata-action@v6 pin entry for the repo’s lock file.
.github/workflows/release.lock.yml	Updates the pinned docker/metadata-action SHA used by the release workflow.

Copilot's findings

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• Files reviewed: 7/7 changed files
• Comments generated: 3