fix: address CodeRabbit review findings (#204)

- Remove contradictory workflow_dispatch example from reusable-workflows rules
- Remove stale {{major}}.{{minor}} tag from build-workflow docs
- Fix linear backoff to true exponential (2**i) in gitops-update retry loop

Author: bedatty

.cursor/rules/reusable-workflows.mdc

@@ -146,15 +146,6 @@ on:
     secrets:
       DEPLOY_TOKEN:
         required: true
-  workflow_dispatch:
-    inputs:
-      environment:
-        required: true
-        type: string
-      dry_run:
-        description: Preview changes without applying them
-        type: boolean
-        default: false
 ```
 
 The two modes have opposite goals — design them accordingly:

.github/workflows/gitops-update.yml

@@ -458,7 +458,7 @@ jobs:
               exit 1
             fi
 
-            BACKOFF=$((i * 2))
+            BACKOFF=$((2 ** i))
             echo "Push failed (attempt $i/$MAX_RETRIES), rebasing and retrying in ${BACKOFF}s..."
             sleep "$BACKOFF"
             git pull --rebase origin main

docs/build-workflow.md

@@ -139,7 +139,6 @@ Generated tags based on semantic versioning:
 | Tag Pattern | Example | When Applied |
 |-------------|---------|--------------|
 | `{{version}}` | `1.0.0-beta.1` | Always |
-| `{{major}}.{{minor}}` | `1.0` | Always |
 | `{{major}}` | `1` | Release tags only |
 
 ## Monorepo Change Detection