PE hyperstack: add bro - generalist capability persona

[KailasMahavarkar]

Adds bro, the 4th persona and first generalist: a very capable, pragmatic 28-30 human lens spanning ui-ux, design, coding, marketing, and sales. Bro decomposes any new challenge into sub-problems, attacks each with the full skill/MCP/web surface, and combines the learnings into the overall solve. Capability mode; produces and hands back to hyper.

Design decisions

Decision	Rationale
"plugin": "*" binding	generalist owns no single corpus - binds the whole plugin surface; documented in personas/README.md
CHECKS.md included	bro carries a falsifiable quality bar (only pm had one before); capability persona with gate-grade self-checks
Registry bullet kept single-line	compiler extractSimpleBullets drops continuation lines (pm's multi-line bullet is truncated in bootstrap) - single line survives compilation whole
No MCP plugin	plugin count stays 16; all existing count assertions untouched

Behavior contract (from spec)

Trait	Where
Decompose -> approach each -> combine	Bro Law + operating loop (SKILL, LIFECYCLE)
Session tool-call inventory, cached	Bro Law + session bootstrap
Evidence-backed; blunt "heuristic, not measured"	evidence discipline
No comment poisoning; trim or omit	code discipline + CHECKS
Quality pride: scale, optimize	mission + quality pass + CHECKS
Controlled subtask dispatch; >2min -> monitor, kill after	subtasks and time
UI gear change: interaction flow -> behaviour-analysis -> ui-ux -> designer	UI gear change section
Web search for cross-validation	evidence discipline
Fail fast: stop -> retrospective -> re-analyze -> re-allocate	Bro Law + fail fast
UTF-8 diagrams, padded tables	output style
Smart-decision pushing (user gets sharper)	voice + evidence discipline
Japanese-learning sidekick, skipped on high-priority (review/bugs/db-prod/releases/migrations)	sidekick sections

Contents

File	Intent
personas/bro/persona.json	capability manifest, plugin: "*", engages_when triggers
personas/bro/PROFILE.md	identity, voice, method, authority, sidekick
personas/bro/LIFECYCLE.md	engage criteria, session bootstrap, operating loop, gear change, handback
personas/bro/CHECKS.md	10 falsifiable quality checks
skills/bro/SKILL.md	the behavior engine (Bro Law + disciplines)
skills/hyperstack/SKILL.md	persona registry bullet (single-line)
personas/README.md	table row
tests/persona-registry-behaviour.test.ts	bro load assertions
skills/INDEX.md, generated/.../hyperstack.bootstrap.md	regenerated

Verification

• bun test: 86 pass, 0 fail (was 85; +1 bro registry test)
• bun run compile:context: succeeds, all 34 markers intact, bro bullet present whole in bootstrap line 86
• bun run skills:index: bro row generated
• em-dash sweep on new files: clean