chore: rename gitea-projects-api → gitea-local-fork

The fork tracked by this derivation is no longer a single-feature
branch ("feat/projects-api") but the integration tip of Oleks's
local gitea fork ($HOME/projects/gitea, branch oleks/main), carrying
upstream/main + PR #37518 Projects REST API + a CI gate + fork-local
commits. Reflect the broader scope in the package and attribute name,
and document the local fork path + branch in the derivation header.

justfile

@@ -29,16 +29,17 @@ antigravity-build-no-fhs:
 antigravity-update:
     nix flake update antigravity-nix
 
-# ── gitea-projects-api ─────────────────────────────────────
+# ── gitea-local-fork ───────────────────────────────────────
+# Builds Oleks's local gitea fork (/home/oleks/projects/gitea, branch oleks/main).
 
 # Build the gitea fork (compiles Go 1.26.3 first time; ~5-8 min cold)
 gitea-build:
-    nix build .#gitea-projects-api --print-build-logs
+    nix build .#gitea-local-fork --print-build-logs
 
-# Refresh gitea-projects-api: bump rev/hashes/version, retag the gitea fork, push both repos
+# Refresh gitea-local-fork: bump rev/hashes/version, retag the gitea fork, push both repos
 gitea-update:
     nix run nixpkgs#nix-update -- \
-        --flake gitea-projects-api \
+        --flake gitea-local-fork \
         --use-update-script
 
 # Run gitea from the attic-cached build (no local recompile)
@@ -46,4 +47,4 @@ gitea-run:
     nix run \
         --extra-substituters "https://nix-cache-custom.oleks.space/attic-infra-cache-k3s-1" \
         --extra-trusted-public-keys "attic-infra-cache-k3s-1:qYSNK3DmttQXCFqn1t50qoWGtQNPRFWq9mgQjD05DeU=" \
-        git+https://git.oleks.space/oleks/flake-hub#gitea-projects-api -- --help
+        git+https://git.oleks.space/oleks/flake-hub#gitea-local-fork -- --help