feat(sessions): persist plugin state across runtimes

[w0wl0lxd]

Summary

• capture and hydrate scoped Lua plugin state in UI sessions
• migrate todo_write to root-scoped host state and preserve todos across turns
• persist snapshots in headless, ACP, SDK, print, and agent session loops through a dependency-inverted lifecycle interface
• checkpoint streamed transcript progress without blocking periodic UI saves on Lua lifecycle drains

Stack

• Depends on feat(lua): add scoped plugin session state runtime #320

Validation

• cargo fmt --all -- --check
• stylua --check plugins/todo_write/init.lua
• focused UI/Lua persistence tests: 6 passed
• headless lifecycle persistence tests: 2 passed
• cargo clippy -p n00n-agent -p n00n-lua -p n00n-acp -p n00n --tests -- -D warnings
• cargo check -p n00n-agent -p n00n-lua -p n00n-acp -p n00n

A combined 1,989-test nextest run was OOM-killed with exit 137 during startup after compilation, so validation was rerun in bounded package/test slices.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: eb2952e1-4f88-49e4-a7df-98c0e5177626

📥 Commits

Reviewing files that changed from the base of the PR and between 1b3bc68 and 8081624.

📒 Files selected for processing (20)

• changelog.d/332.added.md
• n00n-acp/src/lib.rs
• n00n-acp/src/server.rs
• n00n-agent/src/headless.rs
• n00n-lua/src/api/autocmd.rs
• n00n-lua/src/api/util/ctx.rs
• n00n-lua/src/loader.rs
• n00n-lua/src/state.rs
• n00n-lua/tests/plugin_host.rs
• n00n-ui/src/app/mod.rs
• n00n-ui/src/app/session.rs
• n00n-ui/src/app/tests.rs
• n00n-ui/src/event_loop.rs
• plugins/todo_write/init.lua
• site/docs/content/lua-api/_index.md
• src/cmd/acp.rs
• src/cmd/agent.rs
• src/cmd/tui.rs
• src/print.rs
• src/sdk_mode.rs

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[w0wl0lxd]

@coderabbitai review

@codex review

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[coderabbitai]

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 008bdf3e6e

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[codecov]

Codecov Report

❌ Patch coverage is 63.67615% with 166 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
n00n-acp/src/server.rs	0.00%	76 Missing ⚠️
n00n-agent/src/headless.rs	83.91%	32 Missing ⚠️
n00n-ui/src/app/session.rs	78.57%	18 Missing ⚠️
n00n-lua/src/loader.rs	82.75%	10 Missing ⚠️
src/cmd/agent.rs	0.00%	8 Missing ⚠️
n00n-ui/src/event_loop.rs	0.00%	5 Missing ⚠️
src/cmd/acp.rs	0.00%	5 Missing ⚠️
src/cmd/tui.rs	0.00%	5 Missing ⚠️
src/print.rs	0.00%	3 Missing ⚠️
n00n-lua/src/api/util/ctx.rs	80.00%	2 Missing ⚠️
... and 1 more

📢 Thoughts on this report? Let us know!

[github-actions]

Criterion

Details

Benchmark suite	Current: 8081624	Previous: 1b3bc68	Ratio
fib/jit_mlua_hook	6496444 ns/iter (± 162861)	6628733 ns/iter (± 86431)	0.98
fib/jit_watchdog	2444554 ns/iter (± 10045)	2226717 ns/iter (± 19758)	1.10
fib/jit_none	2442780 ns/iter (± 90549)	2254120 ns/iter (± 85186)	1.08
fib/interp_mlua_hook	7611655 ns/iter (± 47701)	8206415 ns/iter (± 40916)	0.93
fib/interp_watchdog	3892075 ns/iter (± 44404)	4323241 ns/iter (± 85124)	0.90
fib/interp_none	3801043 ns/iter (± 19880)	4331679 ns/iter (± 31861)	0.88
buffer_rw/jit_mlua_hook	554899 ns/iter (± 10624)	579585 ns/iter (± 1912)	0.96
buffer_rw/jit_watchdog	167768 ns/iter (± 428)	192203 ns/iter (± 586)	0.87
buffer_rw/jit_none	167657 ns/iter (± 215)	191894 ns/iter (± 623)	0.87
buffer_rw/interp_mlua_hook	1066648 ns/iter (± 7253)	1047758 ns/iter (± 17667)	1.02
buffer_rw/interp_watchdog	615314 ns/iter (± 8905)	582678 ns/iter (± 1397)	1.06
buffer_rw/interp_none	615272 ns/iter (± 4227)	581913 ns/iter (± 1629)	1.06
splash_render_120x40	64386 ns/iter (± 5922)	61270 ns/iter (± 8574)	1.05
splash_render_200x60	174179 ns/iter (± 11103)	128212 ns/iter (± 27285)	1.36

This comment was automatically generated by workflow using github-action-benchmark.

[linear-code]

N00N-184