Feat v0.8.4 docs surface fix (#71)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

CHANGELOG.md

@@ -2,6 +2,48 @@
 
 All notable changes to Armature are documented here.
 
+## v0.8.4 — Documentation Refresh + Surface Sizing Fix
+
+Eight versions of module additions (v0.7.5–v0.8.3) shipped without a
+docs pass. This release brings the public-facing guides up to date and
+fixes a CSS layout bug affecting all surfaces.
+
+**Documentation refresh**
+
+- `STARLARK-REFERENCE.md` — added `workspace` module section (5 builtins),
+  `permissions` module section, and `settings.has_capability()` documentation.
+- `EXTENSION-GUIDE.md` — added `capabilities` manifest block, `vector(N)`
+  column type, `user_permissions` and `gate_permission` manifest fields,
+  updated sandbox permissions list with v0.8.0+ additions (`files.read`,
+  `files.write`, `workspace.manage`).
+- `TUTORIAL-FIRST-EXTENSION.md` — reviewed for v0.7+ accuracy (no changes needed).
+
+**Surface sizing fix**
+
+All surfaces using the shell topbar had scroll content clipped at the
+bottom by ~44px (the topbar height). Root cause: surface containers were
+siblings of `#shell-topbar` inside `.surface-inner`, which used
+`height: 100%` without flex layout — the surface div claimed the full
+parent height, ignoring the topbar sibling.
+
+- Fix: `.surface-inner` now uses `display: flex; flex-direction: column`
+  so the topbar and surface share vertical space via flex layout.
+- All surface containers (`.surface-docs`, `.surface-admin`,
+  `.surface-settings`, `.surface-editor`, `.extension-surface`) changed
+  from `height: 100%` to `flex: 1; min-height: 0`.
+- Inline styles on `surface-team-admin` and `welcome-mount` templates
+  updated to match.
+
+**Modified files:**
+
+- `server/pages/templates/base.html` — `.surface-inner` gains flex column layout
+- `src/css/surfaces.css` — `.surface-docs`, `.surface-admin`, `.surface-settings`, `.surface-editor`
+- `src/css/extension-surface.css` — `.extension-surface`
+- `server/pages/templates/surfaces/team-admin.html` — inline style fix
+- `server/pages/templates/surfaces/welcome.html` — inline style fix
+- `docs/STARLARK-REFERENCE.md` — workspace, permissions, has_capability
+- `docs/EXTENSION-GUIDE.md` — capabilities, vector, user_permissions, gate_permission
+
 ## v0.8.3 — Vector Column Type
 
 Extensions can now declare vector columns and perform similarity search.