docs: Convert issue-63.md from placeholder to proper tracking document

docs/issue-63.md

@@ -1,5 +1,20 @@
-# Issue 63
+# On-Chain Governance System - Tracking Document
 
-Work in progress by Emulated Coder.
+**Note:** This is a placeholder/tracking document and does NOT contain an implementation.
 
-Ref: #63
+## Work in Progress
+
+**Planned Components:**
+- [ ] Proposal System (RC3-005.1): Support for parameter changes, treasury spending, and protocol upgrades
+- [ ] Voting Mechanism (RC3-005.2): Token-weighted voting (1 CELL = 1 vote) with delegation support and optional quadratic voting
+- [ ] Execution System (RC3-005.3): Automatic proposal execution with timelock delay, emergency cancel, and multi-sig guardian
+
+**Completed Work:**
+- None yet. Work has not started.
+
+**Expected Completion Timeline:**
+- Timeline to be determined.
+
+**Relevant Design Documents / Specifications:**
+- See docs/RELEASE_REQUIREMENTS.md (RC3-005) for detailed requirements
+- Tracking: https://github.com/Steake/BitCell/issues/63