feat(presets): support regex resource selectors

[lmtyy]

Add regex: selectors for preset templates, scripts, and commands. Existing exact-name matching remains unchanged; regex patterns are validated and matched against complete resource names.

Command selectors are expanded to concrete lower-layer command names before registration, keeping selector expressions out of command filenames and registry records. Reconciliation and diagnostics handle matched resources across preset lifecycle changes.

Closes #4659

Testing

• Tested locally with uv run specify --help
• Ran the full test suite: 8415 passed, 211 skipped
• Ran targeted selector, resolver, manifest, and command lifecycle tests: 376 passed
• Ran Python parity tests: 98 passed, 2 skipped
• Ran Ruff checks, ShellCheck, PowerShell syntax parsing, Python compilation, and git diff --check

AI Disclosure

• I did not use AI assistance for this contribution
• I did use AI assistance (fill in the disclosure below)

AI disclosure: Implemented with Hermes Agent (Nous Research), using the gpt-6-Astra model in an interactive, human-supervised workflow. AI assistance was used for code changes, tests, debugging, and validation; the contributor should review the final diff before merging.

[Copilot]

Copilot review overview

🟡 Changes recommended

Command resolution, skill registration, diagnostics, warnings, and lifecycle reconciliation have unresolved functional gaps.

Review effort: Balanced
Findings: 3 · 2

Open (5)

• Include command selectors in layer resolution · New
• Collect all matching regex declarations · New
• Fix invalid specify_cli._selectors import · New
• Expand selectors before AI skill registration · New
• Reconcile selectors after preset and extension changes · New

What changed in this PR

Adds regex: resource selectors to preset resolution and command materialization.

Changes:

• Validates and full-matches regex selectors.
• Expands command selectors and adds lifecycle reconciliation.
• Adds resolver and selector coverage.

File	Description
tests/​specify_cli/​presets/​test_regex_selectors.py	Tests selector matching and resolution.
src/​specify_cli/​presets/​command_set_priority.py	Reconciles commands after priority changes.
src/​specify_cli/​presets/​command_info.py	Displays selector matches.
src/​specify_cli/​presets/​command_enable.py	Reconciles enabled preset commands.
src/​specify_cli/​presets/​_selectors.py	Implements selector helpers.
src/​specify_cli/​presets/​_resolver.py	Resolves regex template and script layers.
src/​specify_cli/​presets/​_manifest.py	Validates regex expressions.
src/​specify_cli/​presets/​_manager.py	Integrates expansion into lifecycle handling.
src/​specify_cli/​presets/​_manager_commands.py	Expands command selectors.

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[mnriem]

Please address Copilot feedback

[lmtyy]

Addressed all five Copilot review findings:

• Added command regex selectors to normal layer resolution and composition.
• Preserved all matching regex declarations in manifest order.
• Fixed the invalid _selectors imports used by diagnostics.
• Reused selector expansion for AI-skill registration.
• Added selector-aware reconciliation for relevant preset/extension lifecycle changes.

Also added regression coverage for overlapping selectors, command composition strategies, diagnostics, AI-skill registration, and lifecycle state changes.

Validation:

• 8624 passed, 17 skipped
• 183 targeted regression tests passed
• Ruff passed
• Python compilation passed
• git diff --check passed

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.

[lmtyy]

All previous Copilot review findings have been addressed and the updated test suite is passing. The latest Copilot re-review appears to have failed due to a review error, so the PR is ready for another review when convenient.