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todos/004-completed-p2-namespace-packages.md

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+---
+status: pending
+priority: p2
+issue_id: "004"
+tags: ["security", "reliability", "python"]
+dependencies: []
+---
+
+# Add __init__.py to Namespace Packages
+
+Add `__init__.py` files to implicit namespace packages to prevent import hijacking and ensure correct package resolution.
+
+## Problem Statement
+
+Both Security Sentinel (INP001) and Kieran Python Reviewer identified missing `__init__.py` files. While Python 3 supports implicit namespace packages, omitting `__init__.py` in standard packages can lead to ambiguity and potential security risks (import hijacking).
+
+## Findings
+
+- **Issue:** Missing `__init__.py` files.
+- **Impact:** Security/Reliability. INP001 warning.
+
+## Proposed Solutions
+
+### Option 1: Add Empty __init__.py
+
+**Approach:** Create empty `__init__.py` files in all directory levels that function as packages.
+
+**Pros:**
+- Explicitly defines packages.
+- Resolves INP001.
+
+**Cons:**
+- Adds file clutter (minor).
+
+## Recommended Action
+
+**To be filled during triage.**
+
+## Technical Details
+
+**Likely locations:**
+- `src/helia` (check if present)
+- Subdirectories in `src/helia` where they are missing.
+
+## Resources
+
+- **Source:** Security Sentinel / Kieran Python Reviewer
+
+## Acceptance Criteria
+
+- [ ] `__init__.py` files added to all relevant source directories.
+- [ ] Package imports verify correctly.
+
+## Work Log
+
+### 2025-12-20 - Initial Creation
+
+**By:** Claude Code
+
+**Actions:**
+- Created todo based on code review findings.