ci(workflows): clarify dispatch UI text

Three small UI tweaks for the Actions panel display:

- provenance.yml: `name: 📦 Publish` → `📦 Publish to npm`. The
  workflow has always published to npm; the prior name read as
  "publish what?" in the Actions sidebar.
- provenance.yml: dry-run input description shortened from a full
  paragraph to `Dry run (--dry-run on npm publish, default: true)`.
  The previous text wrapped to 3+ lines in the dispatch popover and
  buried the actual default behavior.
- weekly-update.yml: `name: 🔄 Weekly Dependency Update` →
  `🔄 Weekly Update`. The workflow has grown beyond just dep updates
  (lockstep sweeps, security-advisory triage, cascade housekeeping);
  the broader name reflects the actual scope.

No behavior change — pure display strings.

Author: jdalton

.github/workflows/provenance.yml

@@ -1,4 +1,4 @@
-name: 📦 Publish
+name: 📦 Publish to npm
 
 # Dependencies:
 #   - SocketDev/socket-registry/.github/workflows/provenance.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
     inputs:
       dry-run:
-        description: 'Stage everything but pass --dry-run to npm publish; nothing reaches the registry. Default: true — uncheck to opt into a real publish.'
+        description: 'Dry run (--dry-run on npm publish, default: true)'
         required: false
         default: true
         type: boolean

.github/workflows/weekly-update.yml

@@ -1,4 +1,4 @@
-name: 🔄 Weekly Dependency Update
+name: 🔄 Weekly Update
 
 on:
   schedule: