docs: record v1.3.2 host install verification

[jsleemaster]

What

• records the 2026-07-13 isolated Claude Code and Codex CLI install verification for Gooblin 1.3.2
• updates compatibility evidence to the current host versions and GitHub main commit
• time-scopes ordinary user installation observations instead of implying marketplace state is fixed

Evidence

• source commit verified: 553adf31d48daf6449dd57ca94ac4a1df32e2499
• Claude Code 2.1.96: gooblin@gooblin 1.3.2 enabled in an isolated configuration root
• Codex CLI 0.144.1: gooblin@gooblin 1.3.2 installed and enabled in an isolated configuration root
• isolated roots removed after verification
• ordinary-install observations: immediately before/after isolation Claude 1.2.0 and Codex 1.3.1; later recheck Claude 1.2.0 and Codex 1.3.2

Gates

• npm run validate
• git diff --check
• npm pack --dry-run --json (1.3.2, 88 files)
• independent exact-head review: CLEAN at 012afee458016aa7853414f5d8481cf01133bbef
• PR CI: run 29237081530, Node 18/20/24 green
• squash merge d3ab29c2b4d7a71bd60268d9eab751e378cfd66b and main CI run 29237224682 green

This closes the host-install evidence gate in #57. It does not claim npm 1.3.2 has been published.