docs: reorganize and rename documentation files for consistency

- Apply consistent prefix naming: AE__, GUIDE__, PROJECT__, MODULE__, TODO__
- Move superseded/session docs to documentation/history/
- Migrate old/ directory contents to history/ with updated naming
- README.md: replace stale Modules section with accurate current routes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

documentation/GUIDE__Development.md

@@ -1,6 +1,6 @@
 # Aether Development SOP (Frontend)
 > **Version:** 1.1 (2026-02-16)
-> **Location:** documentation/GUIDE__DEVELOPMENT.md
+> **Location:** documentation/GUIDE__Development.md
 
 ## 1. 🛡️ Verification (The "Test-First" Mandate)
 **Rule:** No code is to be committed unless it has passed local verification. Skipping this is a violation of the Aether Dev Protocol.
@@ -31,5 +31,8 @@ You are not working in a vacuum. You MUST coordinate with the Backend Agent.
 Before starting work:
 1. Read `~/agents_sync/README.md` to understand the fleet status and cross-agent tasks.
 2. Check `README.md` in the project root for technical specs.
-3. Review your local `documentation/AGENT_TODO.md` for active tasks.
+3. Review your local `documentation/TODO__Agents.md` for active tasks.
 4. Be sure to describe the plan before you start making code changes to one or more files.
+
+## 4. Aether UI/UX and API V3 Documentation
+* documentation/GUIDE__AE_API_V3_for_Frontend.md

documentation/GUIDE__SvelteKit2_Svelte5_DexieJS.md

@@ -312,3 +312,6 @@ let results = await db.table.where('id').equals(id).reverse().sortBy('sort_key')
 let results = await db.table.where('id').equals(id).sortBy('sort_key');
 return results.reverse();
 ```
+
+## References
+* https://dexie.org/llms.txt - Dexie.js and Dexie Cloud — LLM Guide and Documentation Summary

documentation/PROJECT__AE_Object_Field_Editor_V3_upgrade.md

@@ -38,7 +38,7 @@ Consolidate the legacy CRUD components into a single, high-performance "Aether O
 ### Phase 4: Migration & Cleanup
 - [x] Create a playground route for V3 verification (`/testing/ae_obj_field_editor_v3`).
 - [ ] Deprecate and eventually remove `v1` and `v2` files.
-- [ ] Update `GUIDE__DEVELOPMENT.md` with the new usage patterns.
+- [ ] Update `GUIDE__Development.md` with the new usage patterns.
 
 ## ⚠️ Security & Reliability Stabilization (NEW)
 - [x] **Account Context:** Fixed 403 errors by unifying API helpers to the `/v3/crud/` standard.