docs: showreel del explorer como hero del README + fix links muertos (gioser→tawasuyu)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -4,8 +4,14 @@
 
 `minga` (Quechua: *collective work*) shares content peer-to-peer: multi-bundle packs, content-addressed (BLAKE3) storage, and a FUSE filesystem so shared content mounts as real files. Discovery and transport ride the `card`/`chasqui` networking layer (relay, dcutr, autonat — NAT-traversal included).
 
+<p align="center">
+  <img src="docs/minga_showreel.gif" alt="minga showreel — the repo explorer: AST nodes in the content-addressed store, Ed25519 attestations vouching for them, and Merkle-Search-Tree keys" width="900">
+  <br>
+  <sub>the repo explorer — content-addressed AST nodes, Ed25519 attestations &amp; Merkle-Search-Tree keys</sub>
+</p>
+
 ## How dependencies work
-Front-door repo: only `minga-*` crates here. The `card` identity primitives, shared leaves and UI are git-dependencies of the [`gioser`](https://gitea.gioser.net/sergio/gioser) monorepo (source of truth).
+Front-door repo: only `minga-*` crates here. The `card` identity primitives, shared leaves and UI are git-dependencies of the [`tawasuyu`](https://github.com/tawasuyu/tawasuyu) monorepo (source of truth).
 
 ## License
-MIT. Part of the [gioser](https://gitea.gioser.net/sergio/gioser) suite.
+MIT. Part of the [tawasuyu](https://github.com/tawasuyu/tawasuyu) suite.