docs: split CFP into concise README + docs/ files

README keeps the pitch and short abstract; outline, architecture,
influences, audience, and submission kit move to docs/.

docs/architecture.md

@@ -0,0 +1,49 @@
+# Architecture at a glance — `File > Protocol > App`
+
+One source of truth (your files), one network you own (the protocol), many lenses to read it (the apps).
+
+```text
+        FILE  ───▶  PROTOCOL  ───▶  APP
+       (own it)    (share it)      (read it — many lenses, one source)
+
+
+   ┌──────────────────────────────┐
+   │ FILE — your notes            │
+   │ Markdown in a Git repo       │
+   │ Zettelkasten: notes + links  │
+   │   note.md                    │
+   │   note.pub.md   ◀── publish  │
+   └───────────────┬──────────────┘
+                   │  git push
+                   ▼
+   ┌──────────────────────────────┐
+   │ remanso-cli  (fork: Sequoia) │
+   │ local CLI or GitHub Action   │
+   │ change-detect · img → blobs  │
+   │ writes atUri back            │
+   └───────────────┬──────────────┘
+                   │  com.atproto.repo.createRecord
+                   ▼
+   ┌──────────────────────────────────────────────────┐
+   │ PROTOCOL — your PDS   (records you own)          │
+   │ identity: did:plc:… + handle  (plc.directory)    │
+   │ addressed by DID + rkey:                         │
+   │   site.standard.document   shared → reach        │
+   │   space.remanso.note       custom → rich         │
+   └────────────┬─────────────────────────────────┬───┘
+                │ firehose / Jetstream            │ listRecords (read)
+                ▼                                 ▼
+   ┌─────────────────────────┐   ┌────────────────────────────────┐
+   │ remanso-jetstream       │   │ APP — many lenses, one source  │
+   │ AppView (self-hosted)   │   │  Remanso (remanso.space)       │
+   │ Jetstream→SQLite→REST   │──▶│    + Bluesky graph (getFollows)│
+   └─────────────────────────┘   │  apoena.dev (static site)      │
+                                 │  Leaflet / any standard.site   │
+     reuse the Bluesky graph ───▶│  Bluesky & other atproto apps  │
+     app.bsky.graph.getFollows   └────────────────────────────────┘
+
+   Self-hosted on Coolify (platform.apoena.dev) + Gitea (git.apoena.dev).
+   GitHub = push mirror.
+```
+
+> The whole stack is self-hosted: **Coolify** (`platform.apoena.dev`) runs the AppView and apps, **Gitea** (`git.apoena.dev`) hosts the code, with **GitHub** as a push mirror.