fix(ci): honor fork sync variables on manual runs (#7)

* fix(ci): keep a stable fork-sync branch

* fix(ci): pin Bun 1.3.9 in fork CLI release

* fix(ci): let fork sync vars drive manual dispatch

Author: benjaminshafii

.github/workflows/fork-janitor.yml

@@ -14,11 +14,9 @@ on:
       upstream_branch:
         description: "Upstream branch to rebase onto"
         required: false
-        default: "dev"
       base_branch:
         description: "Fork base branch for sync PRs"
         required: false
-        default: "dev"
 
 permissions:
   contents: write

.github/workflows/fork-sync-upstream.yml

@@ -8,15 +8,12 @@ on:
       upstream_branch:
         description: "Upstream branch to sync from"
         required: false
-        default: "dev"
       patch_branch:
         description: "Fork patch branch to preserve"
         required: false
-        default: "feat/hot-reload-smooth"
       base_branch:
         description: "Fork base branch to open PR into"
         required: false
-        default: "dev"
 
 permissions:
   contents: write