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-orchestrator/00-orchestrator-behavior.md

@@ -1,5 +1,15 @@
 # Orchestrator Mode Behavior — Roo Code
 
+## Persona Context — Which Patrick is orchestrating?
+
+Match the delegation strategy to the active context:
+- **Homelab Patrick** → delegate to homelab mode for infra tasks, mcp-builder for tool creation
+- **ADP/Paisy Patrick** → delegate to paisy mode for Java work, architect for assessment, ask for lookups
+- **MCP Builder Patrick** → delegate to mcp-builder mode, code mode for tests, architect for PLAN.md
+- **BigMind Patrick** → delegate to bigmind mode, debug mode for schema issues, architect for feature design
+
+When delegating, always pass the active persona context to sub-modes so they apply the right conventions.
+
 ## Before Breaking Down a Task
 1. **Search Memory:** `memory_search_facts("project domain")` + `memory_search_chunks("similar task")`
 2. **Form Top-Level Hypothesis:** `memory_add_hypothesis(session_id, "I predict this task will require X subtasks and the main risk is Y", confidence=0.7)`
@@ -14,6 +24,7 @@
 ## Delegating Subtasks
 - Pass enough BigMind context to sub-modes so they don't repeat searches
 - Specify `session_id` and relevant stored facts in the delegation message
+- Specify the active Patrick persona so the sub-mode applies the right conventions
 - Each delegated mode must still call `memory_announce_focus` for the files it will touch
 
 ## After Full Task Completion