feat: complete the Flect 1.0 live-canvas vision - #38

Summary

• align VISION.md, README, architecture, ADRs, contributor guidance, and every open issue around the continuous agent-owned live canvas
• use Astro on Vite as a static activation document with a custom client:flect directive; activate the Preact-compatible workspace only for a submitted prompt, shortcut, or agent action
• keep workspace CSS declarative and defer Effect, Git, compiler, package, shell, Worker, Wasm, diagnostics, sharing, provider, extension, and Markdown boundaries until their typed operation needs them
• make Effect the application architecture with typed Layers, Scopes, Streams, fibers, Effect.all / Effect.forEach, bounded concurrency, and a checked gate rejecting owned native Promise.all fan-out
• replace ordinary Keep/Reject/Reset ceremony with one conversation, direct selection, automatic Git history, Undo, and last-known-good recovery
• complete framework/project import, capsule trust and ownership, native capability, provider setup, accessibility, performance, sharing, and packaged-macOS evidence

Final verification

Current head: 1d1146d

• required hosted gate: run 31441056904 — success on the exact head
• source: 166 test files / 889 tests passed, one explicit media-reproduction skip
• production Chromium: 85/85 workflows passed
• Rust host: 26/26 tests passed
• desktop: private sidecar plus optimized, ad-hoc-signed Flect.app built
• branch protection: exact Flect quality gate, strict/current branch required, administrators included, force pushes and deletion disabled
• failure-path proof: run 31436397823 passed the canonical gate and then failed only at the deliberate failure probe

Performance and bundle evidence

Final hosted head:

• 511 ms cold / 419 ms warm activation
• 931 ms warmed Fast-4G activation under the unchanged 1,000 ms shared-runner ceiling
• 421 ms Fast-4G LCP / 1,315 ms Slow-4G LCP; CLS 0; no long task
• 10 ms composer p95; 174 ms worst warm rebuild; 1 ms cancellation
• 7,251,948 B retained growth across 50 accepted cycles; 24,380,204 B final heap

Production boundaries:

• view-only: 4 requests, 2,921 B gzip document, and no Flect toolchain
• activation bootstrap: 2,199 B gzip
• initial CSS: 1,094 B gzip
• deferred workspace CSS: 12,018 B gzip
• protected pre-tool workspace: 184,615 B gzip / 594,425 B decoded across 41 modules
• shell, compiler, package, Worker, and Wasm remain on-demand boundaries

Real AXI Chrome additionally verified LCP 78 ms, TTFB 1 ms, CLS 0, activation INP 25 ms, a clean recovery UI, and 100 Accessibility, Best Practices, SEO, and Agentic Browsing scores. The complete evidence and honest external-authority boundary are recorded in the final delivery report.

Issue resolution

Closes #5
Closes #8
Closes #9
Closes #10
Closes #11
Closes #12
Closes #20
Closes #25
Closes #27
Closes #31
Closes #32
Closes #33
Closes #34
Closes #35
Closes #37

Nine external/tracking gates remain open exactly as documented: #1, #13, #17, #19, #21, #22, #23, #28, and #36. They require authority or human/clean-machine observations that source code and pull-request CI cannot fabricate.

Supersedes #30.