fix: core and community extension catalogs should be searchable without override envvar

[dhilipkumars]

Description

uses DEFAULT_CATALOG_URLS to contain both core catalog and community one , so even for a simple search in the community catalog (which has a lot of extenions now) a user does not need to use the over-ride env var.

specify extension search
🔍 Searching extension catalog...

Found 7 extension(s):

Azure DevOps Integration (v1.0.0)
  Sync user stories and tasks to Azure DevOps work items using OAuth authentication.

  Author: pragya247
  Tags: azure, devops, project-management, work-items, issue-tracking
  Downloads: 0 | Stars: 0
  Repository: https://github.com/pragya247/spec-kit-azure-devops

  Install: specify extension add azure-devops

Cleanup Extension (v1.0.0)
  Post-implementation quality gate that reviews changes, fixes small issues (scout rule), creates tasks for medium issues, and generates analysis for large issues.

  Author: dsrednicki
  Tags: quality, tech-debt, review, cleanup, scout-rule
  Downloads: 0 | Stars: 0
  Repository: https://github.com/dsrednicki/spec-kit-cleanup

  Install: specify extension add cleanup
  .
  .
  .

Testing

• Tested locally with uv run specify --help
• Ran existing tests with uv sync && uv run pytest
• Tested with a sample project (if applicable)

AI Disclosure

• I did not use AI assistance for this contribution
• I did use AI assistance (describe below)
  Anti-gravity

Fixes : #1768

[Copilot]

Pull request overview

Updates the extension catalog lookup so specify extension search (and related catalog-backed flows) query both the core and community catalogs by default, removing the need for a catalog URL override in common cases (Fixes #1768).

Changes:

• Replaces the single default catalog URL with DEFAULT_CATALOG_URLS including both core + community endpoints.
• Updates catalog fetching to download multiple catalogs and merge them into one in-memory (and cached) catalog.
• Updates cache metadata to track the active catalog URL set (catalog_urls) and invalidates cache when URL configuration changes.

Comments suppressed due to low confidence (1)

src/specify_cli/extensions.py:1011

• The docstring says SPECKIT_CATALOG_URL can be “comma-separated for multiple”, but the implementation treats the env var as a single URL (urlparse(env_value.strip())) and would break on comma-separated values. Either implement splitting/validation for multiple URLs (and return all of them) or update the docstring to reflect that only a single URL is supported.

        1. SPECKIT_CATALOG_URL environment variable (comma-separated for multiple)
        2. Default catalog URLs

        Returns:
            List of URLs to fetch catalogs from

        Raises:
            ValidationError: If custom URL is invalid (non-HTTPS)
        """
        import os
        import sys
        from urllib.parse import urlparse

        # Environment variable override (useful for testing)
        if env_value := os.environ.get("SPECKIT_CATALOG_URL"):
            catalog_url = env_value.strip()
            parsed = urlparse(catalog_url)

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 10 comments.

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[Copilot]

These new tests override catalog.DEFAULT_CATALOG_URLS, but get_catalog_urls() will ignore that override if SPECKIT_CATALOG_URL is set in the runner environment. Clear SPECKIT_CATALOG_URL at the start of the test (e.g., monkeypatch.delenv(..., raising=False)) to ensure the intended URLs are exercised.

[dhilipkumars]

@mnriem PTAL.

i will rebase and get this ready once this is merged.