Add 5 pi extensions: pi-subagents, pi-crew, rpiv-pi, pi-interactive-shell, pi-intercom

extensions/rpiv-pi/skills/annotate-guidance/templates/subfolder-architecture.md

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+```markdown
+# {Layer/Component Name}
+
+## Responsibility
+{1-2 sentences: what this layer does, where it sits in architecture}
+
+## Dependencies
+{List only architectural dependencies — frameworks and libraries that shape how you write code in this layer.
+Do NOT list utility libraries discoverable from package.json/imports (e.g., lodash, moment, xlsx).
+A dependency is worth listing if it imposes patterns, constraints, or conventions on the code.}
+- **{dep}**: Why it's used
+
+## Consumers
+- **{consumer}**: How it uses this layer
+
+## Module Structure
+{Compact directory tree — aim for 4-7 top-level entries, not 15.
+Group related files on one line (e.g., "Service.ts, Handler.ts").
+Use architectural annotations for directories (e.g., "# One repo per entity", "# Domain schemas").
+DO NOT enumerate individual files inside directories — describe the convention.
+When a layer has many directories (10+), group related concerns on one line
+(e.g., "guards/, interceptors/, pipes/ — infrastructure plumbing") rather than listing each separately.
+The structure must stay valid when non-architectural files are added.}
+
+## {Pattern Name} ({Key Constraint or Characterization})
+{Each distinct pattern gets its own H2 section — NOT a generic "## Key Patterns" umbrella.
+Include a fenced code block with an idiomatic, generalized example showing:
+- Constructor / dependencies
+- Key method signatures and return types
+- Error handling / wrapping conventions
+- Inline comments for important conventions (e.g., "// throws on error — service wraps in Result")
+If a pattern spans a layer boundary, show both sides briefly.
+Multiple patterns = multiple H2 sections.}
+
+## {Additional Pattern Name}
+{Second pattern with code block if applicable}
+
+## Architectural Boundaries
+- **NO {X}**: {Why}
+- **NO {Y}**: {Why}
+
+<important if="you are adding a new {entity type} to this layer">
+## Adding a New {Entity Type}
+{Step-by-step checklist inferred from existing code:
+1. Create file following naming convention
+2. Extend/implement base class or interface
+3. Register in factory/container/index
+4. Add related artifacts (schema, test, migration)}
+</important>
+
+<important if="you are writing or modifying tests for this layer">
+## Testing Conventions
+{Test patterns, helpers, fixture locations, mocking approach — if detectable from code}
+</important>
+```
+
+Conditional sections are OPTIONAL — only include them if the pattern-finder skill detects testable patterns or clear "add new entity" workflows. Conditions must be narrow and action-specific. These sections contain checklists/recipes, not code examples (those stay in the unconditional pattern sections). Conditional sections do NOT count toward the 100-line budget for unconditional content.