docs: add code review process and baseline review of all 19 modules

Establishes a per-module code review workflow under code-reviews/ and
records the 2026-05-16 baseline review (commit 9c60592): 241 findings
across all src/ modules (6 Critical, 46 High, 100 Medium, 89 Low).
This is the clean starting point for remediation work.

code-reviews/_template/findings.md

@@ -0,0 +1,67 @@
+# Code Review — <Module>
+
+<!--
+  Template for a module review. Copy the structure below into
+  code-reviews/<Module>/findings.md and fill it in.
+  See ../REVIEW-PROCESS.md for the full process.
+-->
+
+| Field | Value |
+|-------|-------|
+| Module | `src/ScadaLink.<Module>` |
+| Design doc | `docs/requirements/Component-<Name>.md` |
+| Status | Not yet reviewed \| In progress \| Reviewed |
+| Last reviewed | YYYY-MM-DD |
+| Reviewer | <name> |
+| Commit reviewed | `<short SHA>` |
+| Open findings | 0 |
+
+## Summary
+
+One short paragraph: overall health of the module, themes across findings, and
+anything notable that is not a finding.
+
+## Checklist coverage
+
+Confirm every category was examined. Record "No issues found" where applicable.
+
+| # | Category | Examined | Notes |
+|---|----------|----------|-------|
+| 1 | Correctness & logic bugs | ☐ | |
+| 2 | Akka.NET conventions | ☐ | |
+| 3 | Concurrency & thread safety | ☐ | |
+| 4 | Error handling & resilience | ☐ | |
+| 5 | Security | ☐ | |
+| 6 | Performance & resource management | ☐ | |
+| 7 | Design-document adherence | ☐ | |
+| 8 | Code organization & conventions | ☐ | |
+| 9 | Testing coverage | ☐ | |
+| 10 | Documentation & comments | ☐ | |
+
+## Findings
+
+<!-- One entry per finding. Copy the block below. Never delete a finding; close it
+     by changing Status and completing Resolution. -->
+
+### <Module>-001 — <Short title>
+
+| | |
+|--|--|
+| Severity | Critical \| High \| Medium \| Low |
+| Category | <one of the 10 checklist categories> |
+| Status | Open \| In Progress \| Resolved \| Won't Fix \| Deferred |
+| Location | `src/ScadaLink.<Module>/<File>.cs:<line>` |
+
+**Description**
+
+What is wrong and why it matters.
+
+**Recommendation**
+
+Concrete suggested fix.
+
+**Resolution**
+
+_Unresolved._
+<!-- When closed: fixing commit `<SHA>`, date YYYY-MM-DD, one-line description.
+     For Won't Fix / Deferred, justify the decision here. -->