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Profiling the boot answered "is there a real cold-start win?": no wasteful hotspot — the renderer does only ~tens of ms of work at mount, no heavy library (shiki/mermaid/katex/d3/motion) initializes at startup; the rest is Electron runtime + waiting, near the Electron floor. It also exposed that the cold-start number was pessimistic: a fresh --user-data-dir per run means a COLD V8 code cache and worst-case bundle recompile every launch. Real users reuse their profile. Measured delta: fresh (cold cache): spawn→interactive ~1.48s reused (warm cache): ~1.0s So representative launch is ~1.0s; only first-launch-after-install pays ~+400ms. - coldStartSamples() reuses one profile (run 0 warms the cache, discarded; runs 1..N are warm samples), stepping ports + pausing so the single-instance lock releases. `--cold-fresh` measures the first-launch worst case. - Re-baselined cold-start with the representative warm numbers. Net: nothing high-ROI left to optimize. The only lever is shipping a pre-warmed V8 code cache to make first launch match warm (~400ms, once per update) — real packaging complexity for a marginal win, deliberately not pursued. |
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| perf | ||
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| assert-dist-built.mjs | ||
| assert-dist-built.test.mjs | ||
| assert-root-install.mjs | ||
| before-build.mjs | ||
| before-pack.mjs | ||
| before-pack.test.mjs | ||
| bundle-electron-main.mjs | ||
| click-session.mjs | ||
| dev-no-hmr.mjs | ||
| diag-jump.mjs | ||
| diag-scroll-reset.mjs | ||
| eval.mjs | ||
| gen-share-codes.ts | ||
| notarize-artifact.mjs | ||
| notarize.mjs | ||
| patch-electron-builder-mac-binary.mjs | ||
| probe-renderer.mjs | ||
| probe-thread.mjs | ||
| profile-typing-lag.md | ||
| rebuild-native.mjs | ||
| reload-renderer.mjs | ||
| reload.mjs | ||
| run-electron-builder.mjs | ||
| set-exe-identity.mjs | ||
| stage-native-deps.mjs | ||
| stage-native-deps.test.mjs | ||
| test-desktop.mjs | ||
| utils.mjs | ||
| write-build-stamp.mjs | ||