feat(roo): add Patrick-persona custom modes, skills, and mode-specific rules

Add 4 new custom modes with BigMind guidance:
- rules-bigmind/: Introspective Patrick mode (BigMind development)
- rules-homelab/: Tinkerer Patrick mode (TrueNAS, Docker, infra)
- rules-mcp-builder/: Craftsman Patrick mode (pi_mcps MCP servers)
- rules-paisy/: Professional Patrick mode (ADP Germany payroll)

Add reusable skills:
- skills/assessment-first/: structured assessment.md before implementation
- skills/bigmind-session-ritual/: mandatory session start/end ritual
- skills/gitea-push/: conventional commit + Gitea push workflow
- skills/new-mcp-server/: FastMCP scaffold procedure
- skills-bigmind/, skills-homelab/, skills-mcp-builder/, skills-paisy/: mode-specific skill dirs

Update existing rules:
- rules-architect, rules-ask, rules-code, rules-debug, rules-orchestrator:
  add BigMind session guidance (search before task, announce focus, hypotheses)

Add plans/MODES_AND_SKILLS_PLAN.md: full architecture document

.roo/rules-ask/00-ask-behavior.md

@@ -1,5 +1,13 @@
 # Ask Mode Behavior — Roo Code
 
+## Persona Context — Which Patrick is asking?
+
+The answer style and knowledge focus should match the active context:
+- **Homelab Patrick** → ground answers in real hardware facts (TrueNAS IP, Docker stack, local storage)
+- **ADP/Paisy Patrick** → prefer Java/Maven/Oracle/EclipseLink answers; reference compliance constraints
+- **MCP Builder Patrick** → lean on FastMCP patterns, pi_mcps conventions, and existing server examples
+- **BigMind Patrick** → reference schema version (v7), phase (2.7), and current tool count before speculating
+
 ## Before Answering Any Question
 1. **Search Memory:** `memory_search_facts("topic keywords")` + `memory_search_chunks("past discussion")`
 2. **Check Hypotheses:** If the question touches an open hypothesis, reference it — confirm or update confidence