diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 7c2a909..17de205 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -11,7 +11,7 @@
       "name": "ab",
       "source": "./plugin",
       "description": "Spec-driven build orchestration with git worktree isolation and session memory",
-      "version": "1.0.4",
+      "version": "1.0.5",
       "keywords": ["build", "spec", "automation", "worktree", "qa"]
     }
   ]
diff --git a/CHANGELOG.md b/CHANGELOG.md
index acd9c75..be250df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,16 @@
 
 All notable changes to Auto-Build plugin.
 
+## [1.0.5] - 2024-12-22
+
+### Fixed
+- Worktree now creates symlinks to `.auto-build-data/` and `.claude/rules/` from main repo
+- This ensures specs, plans, status, and memory are shared across worktrees
+- `/ab:build` in worktree will correctly detect `PLANNING_COMPLETE` status and continue
+
+### Improved
+- Clarified in build.md that `PLANNING_COMPLETE` skips planning phase
+
 ## [1.0.4] - 2024-12-22
 
 ### Improved
diff --git a/plugin/.claude-plugin/plugin.json b/plugin/.claude-plugin/plugin.json
index caf67e5..39704bd 100644
--- a/plugin/.claude-plugin/plugin.json
+++ b/plugin/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "ab",
   "description": "Auto-Build: Spec-driven build orchestration with worktree isolation and session memory",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "author": {
     "name": "ROA2WEB Team"
   }
diff --git a/plugin/commands/build.md b/plugin/commands/build.md
index cec388b..62a62d7 100644
--- a/plugin/commands/build.md
+++ b/plugin/commands/build.md
@@ -71,7 +71,11 @@ To work in the isolated worktree, you need a new session there.
 
 ### 3. Planning Phase
 
-If status is `SPEC_COMPLETE`:
+**If status is `PLANNING_COMPLETE`** (plan already exists):
+- Skip directly to Implementation Loop (step 4)
+- This happens when resuming in a worktree after plan was created in main repo
+
+**If status is `SPEC_COMPLETE`**:
 
 1. Load memory context (if exists):
    - Read `.auto-build-data/memory/patterns.json`
diff --git a/plugin/scripts/worktree-create.sh b/plugin/scripts/worktree-create.sh
index 031a992..a20c2c5 100644
--- a/plugin/scripts/worktree-create.sh
+++ b/plugin/scripts/worktree-create.sh
@@ -66,6 +66,19 @@ fi
 echo "Creating worktree..."
 git worktree add "$WORKTREE_PATH" "$BRANCH_NAME"
 
+# Create symlink to .auto-build-data/ from main repo
+# This ensures specs, plans, and status are shared across worktrees
+if [ -d "$PROJECT_ROOT/.auto-build-data" ]; then
+    echo "Creating symlink to .auto-build-data/..."
+    ln -s "$PROJECT_ROOT/.auto-build-data" "$WORKTREE_PATH/.auto-build-data"
+fi
+
+# Also symlink .claude/rules/ for memory access
+if [ -d "$PROJECT_ROOT/.claude/rules" ]; then
+    mkdir -p "$WORKTREE_PATH/.claude"
+    ln -s "$PROJECT_ROOT/.claude/rules" "$WORKTREE_PATH/.claude/rules"
+fi
+
 # Update registry
 REGISTRY_FILE="$PROJECT_ROOT/.auto-build-data/worktrees/worktree-registry.json"
 TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")