Migrate to new Gitea instance (gitea.wbd-rd.nl)

- Update all submodule URLs from gitea.centraal.wbd-rd.nl to gitea.wbd-rd.nl
- Add settler as proper submodule in .gitmodules
- Add agent skills, function anchors, decisions, and improvements
- Add Docker configuration and scripts
- Add manuals and third_party docs
- Update .gitignore with secrets and build artifacts
- Remove stale .tgz build artifact

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

third_party/docs/README.md

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+# EVOLV Scientific & Technical Reference Library
+
+## Purpose
+
+This directory contains curated reference documents for EVOLV's domain-specialist agents. These summaries distill authoritative sources into actionable knowledge that agents should consult **before making scientific or engineering claims**.
+
+## How Agents Should Use This
+
+1. **Before making domain claims**: Read the relevant reference doc to verify your reasoning
+2. **Cite sources**: When referencing scientific facts, point to the specific reference doc and its cited sources
+3. **Acknowledge uncertainty**: If the reference docs don't cover a topic, say so rather than guessing
+4. **Cross-reference with skills**: Combine these references with `.agents/skills/` SKILL.md files for implementation context
+
+## Index
+
+| File | Domain | Used By Agents |
+|------|--------|---------------|
+| [`asm-models.md`](asm-models.md) | Activated Sludge Models (ASM1-ASM3) | biological-process-engineer |
+| [`settling-models.md`](settling-models.md) | Sludge Settling & Clarifier Models | biological-process-engineer |
+| [`pump-affinity-laws.md`](pump-affinity-laws.md) | Pump Affinity Laws & Curve Theory | mechanical-process-engineer |
+| [`pid-control-theory.md`](pid-control-theory.md) | PID Control for Process Applications | mechanical-process-engineer, node-red-runtime |
+| [`signal-processing-sensors.md`](signal-processing-sensors.md) | Sensor Signal Conditioning | instrumentation-measurement |
+| [`wastewater-compliance-nl.md`](wastewater-compliance-nl.md) | Dutch Wastewater Regulations | commissioning-compliance, biological-process-engineer |
+| [`influxdb-schema-design.md`](influxdb-schema-design.md) | InfluxDB Time-Series Best Practices | telemetry-database |
+| [`ot-security-iec62443.md`](ot-security-iec62443.md) | OT Security Standards | ot-security-integration |
+
+## Sources Directory
+
+The `sources/` subdirectory is for placing actual PDFs of scientific papers, standards, and technical manuals. Agents should prefer these curated summaries but can reference originals when available.
+
+## Validation Status
+
+All reference documents have been validated against authoritative sources including:
+- IWA Scientific and Technical Reports (ASM models)
+- Peer-reviewed publications (Takacs 1991, Vesilind, Burger-Diehl)
+- Engineering Toolbox (pump affinity laws)
+- ISA publications (Astrom & Hagglund PID control)
+- IEC standards (61298, 62443)
+- EU Directive 91/271/EEC (wastewater compliance)
+- InfluxDB official documentation (schema design)