chore: clean up superproject structure

Move content to correct locations:
- AGENTS.md → .agents/AGENTS.md (with orchestrator reference update)
- third_party/docs/ (8 reference docs) → wiki/concepts/
- manuals/ (12 Node-RED docs) → wiki/manuals/

Delete 23 unreferenced one-off scripts from scripts/ (keeping 5 active).
Delete stale Dockerfile.e2e, docker-compose.e2e.yml, test/e2e/.
Remove empty third_party/ directory.

Root is now: README, CLAUDE.md, LICENSE, package.json, Makefile,
Dockerfile, docker-compose.yml, docker/, scripts/ (5), nodes/, wiki/,
plus dotfiles (.agents, .claude, .gitea).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

wiki/manuals/node-red/INDEX.md

@@ -0,0 +1,30 @@
+# Node-RED Manual Index
+
+This folder summarizes official Node-RED docs that are relevant to EVOLV node development.
+
+## Official Sources
+
+- Creating Nodes: JavaScript file and message handling  
+  https://nodered.org/docs/creating-nodes/node-js
+- Creating Nodes: Edit dialog and node definition in `.html`  
+  https://nodered.org/docs/creating-nodes/edit-dialog
+- Working with messages  
+  https://nodered.org/docs/user-guide/messages
+- Writing Functions (return arrays, multiple outputs, async send/done)  
+  https://nodered.org/docs/user-guide/writing-functions
+
+## What To Check First (EVOLV)
+
+1. Runtime routing in `src/nodeClass.js`: use explicit output arrays for multi-output nodes.
+2. Input handlers: use `send` + `done` pattern from Node-RED runtime docs.
+3. Function nodes in example flows: return arrays with output-position alignment.
+4. Editor/runtime parity: properties in `RED.nodes.registerType(...defaults...)` must map to runtime config parsing.
+5. For FlowFuse dashboard reference, see:
+   - `flowfuse-widgets-catalog.md` — master index of all 22 widget types
+   - `flowfuse-ui-chart-manual.md` — chart widget (line, bar, scatter, pie, histogram)
+   - `flowfuse-ui-gauge-manual.md` — gauge widget (tile, battery, tank, half, 3/4 arc)
+   - `flowfuse-ui-text-manual.md` — text display widget
+   - `flowfuse-ui-template-manual.md` — custom Vue/Vuetify template widget
+   - `flowfuse-ui-button-manual.md` — button widget
+   - `flowfuse-ui-config-manual.md` — config nodes (ui-base, ui-page, ui-group, ui-theme)
+   - `flowfuse-dashboard-layout-manual.md` — layout patterns and sizing rules