Bootstrap DocSite project skeleton

Single-source-of-truth LAN documentation server: renders each project's
docs live from its canonical Gitea repository (pushed main), with one
consistent theme, holding no content copy and never writing to a source
repo. Sources are fetched via Gitea's read-only raw/API; DocSite holds
only a revision-keyed cache.

Lays the project shell — CLAUDE.md (orchestrator discipline, domain
invariants, skills project facts), a minimal Cargo package, .gitignore —
so the first cycle (the walking skeleton) can be specced and implemented
on top.

Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "docsite"
+version = "0.1.0"
+edition = "2021"
+description = "Single-source-of-truth LAN documentation server"
+
+[dependencies]
+# Dependencies are added as the walking-skeleton implementation lands
+# (HTTP stack, comrak, syntect, toml/serde) via the docs/specs/0001 cycle.