feat(rules): add C# language support (#704)

* feat(rules): add C# language support

* feat: add everything-claude-code ECC bundle (#705)

* feat: add everything-claude-code ECC bundle (.claude/ecc-tools.json)

* feat: add everything-claude-code ECC bundle (.claude/skills/everything-claude-code/SKILL.md)

* feat: add everything-claude-code ECC bundle (.agents/skills/everything-claude-code/SKILL.md)

* feat: add everything-claude-code ECC bundle (.agents/skills/everything-claude-code/agents/openai.yaml)

* feat: add everything-claude-code ECC bundle (.claude/identity.json)

* feat: add everything-claude-code ECC bundle (.codex/agents/explorer.toml)

* feat: add everything-claude-code ECC bundle (.codex/agents/reviewer.toml)

* feat: add everything-claude-code ECC bundle (.codex/agents/docs-researcher.toml)

* feat: add everything-claude-code ECC bundle (.claude/rules/everything-claude-code-guardrails.md)

* feat: add everything-claude-code ECC bundle (.claude/research/everything-claude-code-research-playbook.md)

* feat: add everything-claude-code ECC bundle (.claude/team/everything-claude-code-team-config.json)

* feat: add everything-claude-code ECC bundle (.claude/enterprise/controls.md)

* feat: add everything-claude-code ECC bundle (.claude/commands/database-migration.md)

* feat: add everything-claude-code ECC bundle (.claude/commands/feature-development.md)

* feat: add everything-claude-code ECC bundle (.claude/commands/add-language-rules.md)

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Co-authored-by: ecc-tools[bot] <257055122+ecc-tools[bot]@users.noreply.github.com>

* ci: retrigger

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Co-authored-by: ecc-tools[bot] <257055122+ecc-tools[bot]@users.noreply.github.com>

.claude/commands/add-language-rules.md

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+---
+name: add-language-rules
+description: Workflow command scaffold for add-language-rules in everything-claude-code.
+allowed_tools: ["Bash", "Read", "Write", "Grep", "Glob"]
+---
+
+# /add-language-rules
+
+Use this workflow when working on **add-language-rules** in `everything-claude-code`.
+
+## Goal
+
+Adds a new programming language to the rules system, including coding style, hooks, patterns, security, and testing guidelines.
+
+## Common Files
+
+- `rules/*/coding-style.md`
+- `rules/*/hooks.md`
+- `rules/*/patterns.md`
+- `rules/*/security.md`
+- `rules/*/testing.md`
+
+## Suggested Sequence
+
+1. Understand the current state and failure mode before editing.
+2. Make the smallest coherent change that satisfies the workflow goal.
+3. Run the most relevant verification for touched files.
+4. Summarize what changed and what still needs review.
+
+## Typical Commit Signals
+
+- Create a new directory under rules/{language}/
+- Add coding-style.md, hooks.md, patterns.md, security.md, and testing.md files with language-specific content
+- Optionally reference or link to related skills
+
+## Notes
+
+- Treat this as a scaffold, not a hard-coded script.
+- Update the command if the workflow evolves materially.