Add ArmorGemini to Commands & Extensions section

[Harihara04sudhan]

What

Adds ArmorGemini to the Commands & Extensions section (bottom of the section, matching the format of the entries above).

Why here

ArmorGemini is a Gemini CLI extension that adds intent-based security enforcement: every tool call goes through BeforeTool / AfterTool hooks and is checked against an ArmorIQ policy before it runs. Nearest peer already in this section is 16-eyes (AI-driven security audits via custom Gemini CLI commands) — same shape, security-focused, wraps the CLI.

Also submitted to the child list Piebald-AI/awesome-gemini-cli-extensions#26; dual-listing follows the pattern established by other entries in this list (gemini-discord, brooks-lint, Pickle Rick, Listen, etc. all appear in both lists).

Entry

- [ArmorGemini](https://github.com/armoriq/armorGemini) - Intent-based security enforcement for the Gemini CLI. Every tool call is checked against your ArmorIQ policy via `BeforeTool` / `AfterTool` hooks before it runs. Blocks intent drift, unauthorized tool use, and PII/PCI leaks. Install: `curl -fsSL https://armoriq.ai/install_armorgemini.sh | bash`.

Repo hygiene

• Public GitHub repository, MIT-licensed
• gemini-cli-extension topic set on the repo's About section
• gemini-extension.json manifest at repo root — auto-listed at geminicli.com/extensions
• Ships .gemini/settings.json hooks + .gemini/commands/armor/*.toml custom slash commands (/armor:list, /armor:add, /armor:template, /armor:help)
• LICENSE, CONTRIBUTING, CODE_OF_CONDUCT, README, custom social preview all present

Per CONTRIBUTING.md, entry added at the bottom of the appropriate section.