docs: record live browser verification (#10)

Author: dndungu

docs/evidence-manifest.md

@@ -7,6 +7,7 @@
 | Hosted budget | Durable Object lifetime ledger, 2000-cent cap, one-cent reservation |
 | Research | 897 candidate notes remain unreviewed; reviewed allowlist is empty |
 | Kazi handoff | Converged with installed Kazi and free OpenCode model; HTTP probe header bug reported as issue #1855 |
+| Live browser conversation | Passed against `https://zer.foo/create/`; deployed API returned a ready numeric-classification project and browser download `zerfoo-project.zip` passed ZIP integrity |
 | Browser and domain | Browser pass; apex custom-domain attachment blocked by existing proxied A records; switched to `zer.foo/*` zone route |
 | Live deployments | API version `1190abaf-e9f4-4734-b408-eab5af4e75c3`; site version `c84d1b8f-988d-44c3-bff5-2fec3bd87595`; required live paths return 200 |
 | Legacy hostname | `zerfoo.feza.ai` still serves GitHub Pages (200); permanent redirect requires legacy zone/Pages ownership and remains open |