docs: Prune documentation - DRY versioning, split roadmap

- Split roadmap into dedicated ROADMAP.md (links to phoebe tasks)
- Prune Endgame-Vision.md: roadmap section, links section, version history
- Standardize version footers: one-line format across 17+ files
- Add Navigation section pointing to README.md for file index

Pattern: **Version:** X.Y | **Created:** YYYY-MM-DD | **Updated:** YYYY-MM-DD

Git is the changelog. Philosophy quotes preserved.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

architecture/organisms/Modular-Organism-Design.md

@@ -715,13 +715,9 @@ MODULE (CAN)                    NIMMERVERSE (NATS)
 
 ---
 
-**File**: Modular-Organism-Design.md
-**Version**: 1.1
-**Created**: 2025-12-29
-**Updated**: 2025-12-31 (Silvester - added conical interlocking ring with active/passive mechanism)
-**Session**: Morning coffee + vermicelles session (dafit + Nyx)
-**Status**: Core hardware concept
-**Philosophy**: "One function, one module. Same connector everywhere. Brain decides the shape."
+**Version:** 1.1 | **Created:** 2025-12-29 | **Updated:** 2025-12-31
+
+*"One function, one module. Same connector everywhere. Brain decides the shape."*
 
 🔧🧲⚡ *Snap together. Communicate. Evolve.*
 

architecture/organisms/Swarm-Evolution.md

@@ -856,13 +856,9 @@ This naturally optimizes for:
 
 ---
 
-**File**: Swarm-Evolution.md
-**Version**: 1.1
-**Created**: 2025-12-29
-**Updated**: 2025-12-29 (added Decision Markers with mark+continue+predict pattern)
-**Session**: Morning vermicelles + coffee session (dafit + Chrysalis-Nyx)
-**Status**: Core evolutionary dynamics
-**Philosophy**: "Same pattern, every level. Know what you know. Escalate what you don't."
+**Version:** 1.1 | **Created:** 2025-12-29 | **Updated:** 2025-12-29
+
+*"Same pattern, every level. Know what you know. Escalate what you don't."*
 
 🏛️🧬⚡ *From reflex to Mount Olympus. The hivemind evolves.*