Sources: add Gitea; fix Windows shims for shell tool, repo paths and stateDir

tools-fix-backslash.mjs

@@ -0,0 +1,20 @@
+// Collapses every run of 2+ literal backslashes to one in the gitea source files (over-escaped writes).
+import fs from 'node:fs'
+const B = String.fromCharCode(92)
+const files = ['gitea-api.ts', 'gitea.ts', 'gitea-trigger.ts', 'gitea-channel.ts']
+for (const f of files) {
+  const path = 'src/sources/' + f
+  const before = fs.readFileSync(path, 'utf8')
+  let after = before
+  while (after.includes(B + B)) after = after.split(B + B).join(B)
+  if (after !== before) {
+    fs.writeFileSync(path, after)
+    console.log(f, 'collapsed', (before.length - after.length), 'bytes')
+  } else console.log(f, 'clean')
+}
+for (const f of files) {
+  const t = fs.readFileSync('src/sources/' + f, 'utf8')
+  const remaining = t.split(B + B).length - 1
+  const quotes = t.split(B + String.fromCharCode(39)).length - 1
+  console.log(f, 'remaining double:', remaining, 'escaped-quote sites:', quotes)
+}