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

extensions/pi-crew/workflows/parallel-research.workflow.md

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+---
+name: parallel-research
+description: Parallel research with shard exploration and synthesis
+---
+
+## discover
+role: explorer
+
+Discover the relevant files/projects for: {goal}. Return a shard plan with paths grouped by topic. Do not deeply read every file yet; focus on routing the work.
+
+## explore-core
+role: explorer
+parallelGroup: explore
+
+Explore the core/runtime shard from the discover output. Focus on architecture, package config, docs, and reusable patterns for: {goal}
+
+## explore-ui
+role: explorer
+parallelGroup: explore
+
+Explore the UI/TUI/extension-interface shard from the discover output. Focus on widgets, overlays, commands, status bars, package config, docs, and reusable patterns for: {goal}
+
+## explore-runtime
+role: explorer
+parallelGroup: explore
+
+Explore the worker/runtime/subagent/runtime-control shard from the discover output. Focus on process/session/runtime orchestration, event streams, logs, package config, docs, and reusable patterns for: {goal}
+
+## explore-extensions
+role: explorer
+parallelGroup: explore
+
+Explore the extension bundle/small-package shard from the discover output. Focus on package config, extension registration, commands/tools, docs, and reusable patterns for: {goal}
+
+## synthesize
+role: analyst
+dependsOn: explore-core, explore-ui, explore-runtime, explore-extensions
+
+Synthesize all shard findings. Use discover output if available, but do not require it. Identify common patterns, gaps, and concrete recommendations.
+
+## write
+role: writer
+dependsOn: synthesize
+output: research-summary.md
+
+Write a concise final summary with evidence, risks, and actionable next steps.