fix: restore the files that the previous commit removed by mistake

The previous commit was made on a stale base and so reverted work that
landed on master before it. This commit puts every file back to the
state of its parent's parent. The permission enforcement of the
previous commit stays.

Assisted-by: Claude:claude-sonnet-5-5 go

.github/workflows/addons-package.yml

@@ -107,7 +107,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        addon: [tables, voice, face, fine-tuning, quantization, studio, talk, telegram, slack, office, sandbox, web, memory]
+        addon: [tables, voice, face, fine-tuning, quantization, studio, talk, telegram, slack, github, office, sandbox, web, memory]
     steps:
       - uses: actions/checkout@v7
         with:
@@ -226,7 +226,7 @@ jobs:
           # event it fails the plan. A missing or malformed platform file, or
           # any other error, fails the plan on every event.
           include='[]'
-          for id in tables voice face fine-tuning quantization studio talk telegram slack office sandbox web memory; do
+          for id in tables voice face fine-tuning quantization studio talk telegram slack github office sandbox web memory; do
             cfg="addons/$id/package/platforms.yaml"
             err="matrix-$id.err"
             if rows=$(go run ./scripts/addons/cmd/addonpkg matrix --config "$cfg" 2>"$err"); then