Probe repo-local skill discovery and startup ordering across harnesses

docs/probes/2026-09-16-skills-discovery/.gitignore

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+out/
+*.stderr.log
+*-tui.log

docs/probes/2026-09-16-skills-discovery/capability-matrix.md

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+# Capability matrix — repo-local skill discovery
+
+Generated by `report.py` from `matrix.json`; do not edit by hand. A `—` cell means the entry
+could not run (see its status line below and `findings.md`).
+
+| Entry | Version tested | Modes | Native root | Roots consumed | Startup mechanism proven | Exclusion preserving load | Vendor-isolated destination | Reload path | Live catalogue | Startup rewrite | Resume | Nested cwd | Worktree | Peer hook | Interactive | GUI status | Minimum version |
+| -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
+| agy | 1.2.4, 1.2.5 | print | .agents/skills | — | — | — | — | — | — | — | — | — | — | — | — | Antigravity IDE: untested (manual procedure in findings.md) | — |
+| agy-clidir | 1.2.4 | print | .agents/skills | .agent/skills, .agents/skills | n/a (not run) | gitignore, info-exclude | .agent/skills | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | Antigravity IDE: untested (manual procedure in findings.md) | 1.2.4 |
+| agy-dirlayout | 1.2.4, 1.2.5 | print, tui | .agents/skills | .agent/skills, .agents/skills | none | gitignore, info-exclude | .agent/skills | none | n/a (not run) | delete=stale; update=visible_first_turn | add=visible_first_turn; update=visible_first_turn | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | n/a (not run) | S1=visible_first_turn; hook-adds-skill=not_visible; add=visible_live | Antigravity IDE: untested (manual procedure in findings.md) | 1.2.4 |
+| claude | 2.1.273 (Claude Code), 2.1.274 (Claude Code) | print, tui | .claude/skills | .claude/skills | --settings file over the real config root hooks.SessionStart (tui) | gitignore, info-exclude | none | none | n/a (not run) | delete=revoked; update=stale | add=visible_first_turn | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | n/a (not run) | S1=visible_first_turn; hook-adds-skill=visible_first_turn; add=not_visible | n/a | 2.1.273 (Claude Code) |
+| codex | codex-cli 0.154.0 | daemon, print, tui | .agents/skills | .agents/skills, .codex/skills | none | gitignore, info-exclude | none | none | add=visible_live; delete=revoked; update=visible_live | delete=not_visible/stale; update=visible_first_turn | add=visible_first_turn; update=visible_first_turn | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=visible_live | S1=visible_first_turn; hook-adds-skill=not_visible; add=visible_live | n/a | codex-cli 0.154.0 |
+| copilot | GitHub Copilot CLI 1.0.85. | daemon, print, tui | .github/skills | .agents/skills, .claude/skills, .github/skills | none | gitignore, info-exclude | .github/skills | /skills reload | add=not_visible; delete=stale; update=stale | delete=revoked; update=visible_first_turn | add=visible_first_turn; update=stale | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=not_visible | S1=visible_first_turn; hook-adds-skill=not_visible; add=not_visible; reload=visible_after_reload | n/a | GitHub Copilot CLI 1.0.85. |
+| cursor | 2026.09.15-d2fe57e | daemon, print, tui | .cursor/skills | .agents/skills, .claude/skills, .codex/skills, .cursor/skills | project .cursor/hooks.json workspaceOpen pluginPaths (print) | gitignore, info-exclude | .cursor/skills | project .cursor/hooks.json workspaceOpen pluginPaths | add=not_visible; delete=revoked; update=visible_live | delete=revoked; update=visible_first_turn | add=not_visible; update=visible_first_turn | ancestor=not_visible; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=not_visible | S1=visible_first_turn; hook-adds-skill=not_visible | Cursor desktop: untested (manual procedure in findings.md) | 2026.09.15-d2fe57e |
+| cursor-userhooks | 2026.09.15-d2fe57e | daemon, print | .cursor/skills | n/a (not run) | user ~/.cursor/hooks.json workspaceOpen (print) | n/a (not run) | n/a (not run) | user ~/.cursor/hooks.json workspaceOpen | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a | 2026.09.15-d2fe57e |
+| gemini | 0.60.0 | daemon, print, tui | .gemini/skills | — | — | — | — | — | — | — | — | — | — | — | — | n/a | — |
+| kiro | kiro-cli 2.21.4 | daemon, print, tui | .kiro/skills | .kiro/skills | agent hooks.agentSpawn (cli 2.x) (daemon); agent hooks.agentSpawn (cli 2.x) (print); agent hooks.agentSpawn (cli 2.x) (tui) | gitignore, info-exclude | .kiro/skills | none | add=visible_live; delete=revoked; update=visible_live | delete=revoked; update=visible_first_turn | add=visible_first_turn; update=visible_first_turn | ancestor=not_visible; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=visible_live | S1=visible_first_turn; hook-adds-skill=visible_first_turn; add=visible_live | Kiro IDE: untested (manual procedure in findings.md) | kiro-cli 2.21.4 |
+| kiro-agent-bare | kiro-cli 2.21.4 | daemon, print | .kiro/skills | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a | kiro-cli 2.21.4 |
+| kiro-agent-skills | kiro-cli 2.21.4 | daemon, print | .kiro/skills | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a (not run) | n/a | kiro-cli 2.21.4 |
+| opencode-v1 | 1.18.31 | daemon, print, tui | .opencode/skills | .agents/skills, .claude/skills, .opencode/skills | plugin event session.created (print) | gitignore, info-exclude | .opencode/skills | none | add=not_visible; delete=stale; update=stale | delete=revoked; update=stale/visible_first_turn | add=visible_first_turn; update=visible_first_turn | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=not_visible | S1=visible_first_turn; add=not_visible | n/a | 1.18.31 |
+| opencode-v2 | opencode v2.0.4 | daemon, print, tui | .opencode/skills | .agents/skills, .claude/skills, .opencode/skills | n/a (not run) | gitignore, info-exclude | .opencode/skills | n/a (not run) | add=not_visible; delete=revoked; update=stale | n/a (not run) | add=visible_first_turn; update=visible_first_turn | ancestor=visible_first_turn; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | n/a (not run) | S1=visible_first_turn; add=visible_live | n/a | opencode v2.0.4 |
+| pi | 0.85.1 | daemon, print, tui | .pi/skills | .agents/skills, .pi/skills | extension session_start + resources_discover skillPaths (daemon); extension session_start + resources_discover skillPaths (print) | gitignore, info-exclude | .pi/skills | extension session_start + resources_discover skillPaths | add=not_visible; delete=not_visible; update=visible_live | delete=revoked; update=visible_first_turn | add=visible_first_turn; update=visible_first_turn | ancestor=not_visible; local=visible_first_turn | linked-other=not_visible; linked-own=visible_first_turn | hook-from-peer=not_visible | S1=visible_first_turn; hook-adds-skill=not_visible; add=not_visible | n/a | 0.85.1 |
+
+## Status per entry
+
+- `agy`: S1 failed: the native root's skill was not loaded
+- `agy-clidir`: measured
+- `agy-dirlayout`: measured
+- `claude`: measured
+- `codex`: measured
+- `copilot`: measured
+- `cursor`: measured
+- `cursor-userhooks`: measured
+- `gemini`: untested: exception=RuntimeError("vendor exit 1 with no reply; extract failed: JSONDecodeE; exception=RuntimeError('no reply read from the screen; exit None; timeout no PRO; exception=RuntimeError('vendor exit -9 with no reply; session/new failed: {"json
+- `kiro`: measured
+- `kiro-agent-bare`: measured
+- `kiro-agent-skills`: measured
+- `opencode-v1`: measured
+- `opencode-v2`: measured
+- `pi`: measured