Embeds reach out to third parties on render, so default to a placeholder that
mirrors the tool-approval UX: "Load <service>" (this embed) or "Always allow
<service>" (persisted). A desktop-local store ($embedMode ask|always|off +
per-service allowlist) gates the fetch with zero gateway round-trip; an
Appearance setting controls the global default. Local renderers (mermaid, svg,
alerts) are never gated. Addresses review feedback on outbound third-party
requests.
Add a content-agnostic Zoomable primitive (useZoomPan hook + overlay viewer):
click to open full-screen, wheel-zoom toward the cursor, drag to pan, toolbar
zoom/reset, and an optional copy action. Wire Mermaid diagrams into it with
copy-as-PNG; reusable for other inline content later.
Wire the embeds module into the markdown surface: bare provider autolinks unfurl
to inline embeds, ```mermaid/```svg fences route to the rich renderers, and
`> [!NOTE]`-style blockquotes become alert callouts. Labeled links stay plain.
Per-kind renderers, each a lazy split chunk: plain-iframe video/maps (wheel
chains to the transcript; maps gate scroll behind ⌘), the in-document
blockquote-script path for X/Instagram, the dark Spotify player, and the
YouTube iframe. Adds Mermaid and DOMPurify-sanitised SVG fences and GFM alert
callouts, all sized to 33dvh and theme-matched to avoid white color-scheme
artifacts. Main-process stamps a Referer on YouTube embed requests.
Pure, synchronous URL→descriptor matchers for YouTube, Vimeo, Instagram,
Pinterest, TikTok, X, Spotify, Google Maps and OpenStreetMap, plus the shared
embed primitives (error boundary, fail card, escape-html, dark-mode hook,
sizing token). Declares the mermaid + dompurify deps used by the fenced
renderers.
