Installer: multi-repo install, catalog expansion, and a machine-readable catalog export

[SeaCelo]

Builds on the universal installer (#1142). Three additions:

Install several repos in one run. --repo can be repeated (--repo og-zaf --repo og-idn) or take a comma list; --all installs the whole catalog. (On Windows, where a parameter can't repeat, use the comma form: -Repo og-zaf,og-idn.) Each repo clones into its own subfolder under --dest and installs independently — if one fails it's reported and the rest continue, with a per-repo summary at the end. uv is installed once. A single repo keeps the existing per-step prompts; multiple run as a batch after one confirmation. --branch and --repo-url stay single-repo only.

Expanded catalog. Adds og-zaf, og-idn, og-phl alongside og-core/og-eth, now that they're uv-native.

A reliable way to read the catalog. --list (table) and --list-json (JSON) print the catalog and exit, and scripts/repos.json publishes the same data as a static file — so downstream tooling can stay in sync by fetching one URL instead of scraping the script or --help. A small CI check (.github/workflows/check_catalog.yml) fails if install.sh, install.ps1, and repos.json ever drift apart.

Hands-free, unattended use: bash install.sh --all --dest ~/OG --yes. scripts/QUICK_INSTALL.md is updated for all of the above.

Also tightens a few edges: clean error messages for unknown or missing flag values, and a correct non-zero exit when a non-interactive run can't proceed.

Tested: every selection mode on bash 3.2 (the macOS default) — repeated / comma / --all / dedup / single, plus the guardrail errors — all stopping before any real install; the catalog stays in sync via the new CI check. The PowerShell side mirrors the bash logic and its -ListJson path runs in CI, but I haven't yet run the full multi-repo install loop on Windows.

cc: @rickecon @jdebacker

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.26%. Comparing base (a0b9dc9) to head (8f322a5).
⚠️ Report is 35 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1162      +/-   ##
==========================================
- Coverage   73.38%   73.26%   -0.12%     
==========================================
  Files          21       21              
  Lines        5313     5394      +81     
==========================================
+ Hits         3899     3952      +53     
- Misses       1414     1442      +28     

Flag	Coverage Δ
unittests	73.26% <ø> (-0.12%)	⬇️

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