feat: add take-bot workflow and update contribution docs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/take-assign.yml

@@ -0,0 +1,29 @@
+name: Auto-assign on "take"
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  issues: write
+
+jobs:
+  assign:
+    if: >-
+      !github.event.issue.pull_request
+      && contains(fromJSON('["take", "Take", "TAKE"]'), trim(github.event.comment.body))
+    runs-on: ubuntu-latest
+    steps:
+      - name: Assign commenter
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          COMMENTER="${{ github.event.comment.user.login }}"
+          ISSUE="${{ github.event.issue.number }}"
+          CURRENT=$(gh issue view "$ISSUE" --repo "${{ github.repository }}" --json assignees --jq '.assignees[].login' 2>/dev/null)
+          if echo "$CURRENT" | grep -qx "$COMMENTER"; then
+            echo "$COMMENTER is already assigned to #$ISSUE"
+          else
+            gh issue edit "$ISSUE" --repo "${{ github.repository }}" --add-assignee "$COMMENTER"
+            echo "Assigned $COMMENTER to #$ISSUE"
+          fi

CONTRIBUTING.md

@@ -104,7 +104,10 @@ For detailed development setup, code conventions, and project structure, see the
 
 ## Claiming Issues
 
-Want to work on an issue? Comment **"take"** on the issue to claim it. This lets others know you're working on it and prevents duplicate effort.
+1. Browse the [Roadmap](https://open-jarvis.github.io/OpenJarvis/development/roadmap/) for an item that interests you
+2. Check if a [GitHub issue](https://github.com/open-jarvis/OpenJarvis/issues) already exists for it — if not, [open one](https://github.com/open-jarvis/OpenJarvis/issues/new/choose) describing what you'd like to work on
+3. Comment **"take"** on the issue to get auto-assigned
+4. Fork, branch, and start working
 
 If you've claimed an issue but can't finish it, please leave a comment so someone else can pick it up.
 

docs/development/roadmap.md

@@ -14,10 +14,10 @@ These are the areas where active development is happening and contributions are
 
 ## How to Get Involved
 
-1. Browse the workstreams below for items that interest you
-2. Look for **Ready** items and **good first issue** tags
-3. Find the matching [GitHub issue](https://github.com/open-jarvis/OpenJarvis/issues) and comment **"take"** to claim it — if no issue exists yet, [open one](https://github.com/open-jarvis/OpenJarvis/issues/new/choose) describing what you'd like to work on
-4. Read the [Contributing Guide](https://github.com/open-jarvis/OpenJarvis/blob/main/CONTRIBUTING.md) for the full development setup, PR process, and code conventions
+1. Browse the workstreams below for an item that interests you
+2. Check if a [GitHub issue](https://github.com/open-jarvis/OpenJarvis/issues) already exists for it — if not, [open one](https://github.com/open-jarvis/OpenJarvis/issues/new/choose)
+3. Comment **"take"** on the issue to get auto-assigned
+4. Read the [Contributing Guide](https://github.com/open-jarvis/OpenJarvis/blob/main/CONTRIBUTING.md) for development setup and PR process
 
 ---