Replaces the synthetic ~5.5-node/msg pushes with a deterministic generator
(scripts/fixture.ts): lorem-ipsum user turns + fat assistant turns (markdown +
reasoning + 1-15 tool parts with multi-line results) driven through the real
apply()/commitSnapshot paths. mem-bench.tsx pumps it + checks the resume path.
Realistic cost is ~20.4 renderables/msg (3.7x synthetic); informed the cap tune.
Dev bench (not a test, not in the gate suite): mounts <App> under the Solid
test renderer, pushes N streamed turns, samples RSS + mounted-renderable count
with Bun.gc. Demonstrates HERMES_TUI_MAX_MESSAGES=400 pins mounted renderables
at ~2218 vs an unbounded climb to ~55k at 10k messages (RSS flat ~350MB vs
1.3GB). Run: bun scripts/mem-bench.tsx (MEM_BENCH_TOTAL/SAMPLE tunable).
Add a [1/4] format step to scripts/check.sh running
`bunx prettier --check src` (matching how the script invokes the other
tools), renumbering the existing steps to 2-4. Future formatting drift
now fails the gate.
The unused-imports/no-unused-vars warn → error promotion shipped in the
no-non-null-assertion commit (where the eslint rule changes live).
alt-glitch