Ragnarok rodecomp deployment on memento

Changes to upstream:
- git.js: coordinator commit identity from TD_GIT_AUTHOR_NAME/EMAIL.
- build.js: docker runner can share job dirs through a named volume
  (jobVolume/jobVolumeRoot) for containerized workers.
- install.js: staged installer output with logs, start prompt for regions.
- web: feed layout, cache-busting asset versions, multi-agent help section.
- build-td: fetch checksummed Windows runtime when building on non-Windows.

Additions:
- deploy/rodecomp: compose stack, Dockerfiles, Caddyfile, server.json,
  bulk import/verify scripts, and README.md with the deployment notes
  (the root README stays identical to upstream).
- toolchain/msvc-v142: MSVC v142 under Wine (Docker), SDK 10.0.19041.0.
- tools/rodecomp: project preparation, Forgejo provisioning, history and
  identity tools.

deploy/rodecomp/Caddyfile

@@ -0,0 +1,13 @@
+{
+    admin off
+    auto_https off
+}
+:8080 {
+    redir /git /git/ 308
+    handle_path /git/* {
+        reverse_proxy forgejo:3000
+    }
+    handle {
+        reverse_proxy web:8080
+    }
+}