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/database-migration.md

@@ -0,0 +1,36 @@
+---
+name: database-migration
+description: Workflow command scaffold for database-migration in everything-claude-code.
+allowed_tools: ["Bash", "Read", "Write", "Grep", "Glob"]
+---
+
+# /database-migration
+
+Use this workflow when working on **database-migration** in `everything-claude-code`.
+
+## Goal
+
+Database schema changes with migration files
+
+## Common Files
+
+- `**/schema.*`
+- `migrations/*`
+
+## 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 migration file
+- Update schema definitions
+- Generate/update types
+
+## Notes
+
+- Treat this as a scaffold, not a hard-coded script.
+- Update the command if the workflow evolves materially.