refactor(ux): consolidate BMAD skills, update design system, and clean up Prisma generated client

.gemini/skills/bmad-agent-builder/assets/CAPABILITIES-template.md

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+# Capabilities
+
+## Built-in
+
+| Code | Name | Description | Source |
+|------|------|-------------|--------|
+{capabilities-table}
+
+{if-evolvable}
+## Learned
+
+_Capabilities added by the owner over time. Prompts live in `capabilities/`._
+
+| Code | Name | Description | Source | Added |
+|------|------|-------------|--------|-------|
+
+## How to Add a Capability
+
+Tell me "I want you to be able to do X" and we'll create it together.
+I'll write the prompt, save it to `capabilities/`, and register it here.
+Next session, I'll know how. Load `./references/capability-authoring.md` for the full creation framework.
+{/if-evolvable}
+
+## Tools
+
+Prefer crafting your own tools over depending on external ones. A script you wrote and saved is more reliable than an external API. Use the file system creatively.
+
+### User-Provided Tools
+
+_MCP servers, APIs, or services the owner has made available. Document them here._