docs(readme): document [dev] test installation (ticket-026)

README.md

@@ -227,6 +227,13 @@ pip install redup[compare]   # networkx for cross-project community detection
 pip install redup[llm]       # litellm for LLM-powered refactoring plans
 ```
 
+### Development / tests
+
+```bash
+pip install -e ".[dev]"
+pytest -q
+```
+
 ## Quick Start
 
 ### CLI

project/ticket-026/README.md

@@ -0,0 +1,22 @@
+# Ticket 026: Document dev test installation in README
+
+- **ID**: ticket-026
+- **Owner**: antigravity
+- **Status**: IN_PROGRESS
+- **Workflow state**: PUBLICATION
+- **Created**: 2026-10-28
+
+## Goal and scope
+
+SESSION_EXECUTION_AUTHORIZATION: user requested autonomous completion of remaining backlog tasks (`kontynuuj, testuj, scalaj, wykonuj zalegle`) for `semcod/redup#30`.
+Document the `[dev]` optional dependencies installation (`pip install -e ".[dev]"`) and test command (`pytest -q`) in `README.md` so contributors and fleet verifiers install `pytest` before running the test suite.
+
+## Acceptance criteria
+
+- [x] AC-01: `README.md` documents `pip install -e ".[dev]"` and `pytest -q` under Installation.
+- [x] AC-02: `./project/governance-check.sh --base origin/main` and `pytest -q` pass.
+
+## Tracking boundary
+
+This directory contains the minimal reviewed intent. Optional participant prose
+and raw command logs are not required delivery output.

project/ticket-026/intent.json

@@ -0,0 +1,24 @@
+{
+  "schema": "new-project.intent/v3",
+  "ticket": "ticket-026",
+  "summary": "Document dev test installation in README",
+  "workstream": "governance",
+  "classification": {
+    "kind": "SERVICE",
+    "priority": "P2",
+    "origin": "health"
+  },
+  "allowedPaths": [
+    "project/ticket-026/**",
+    "TODO.md",
+    "project/TICKETS.md",
+    "README.md"
+  ],
+  "forbiddenPaths": [
+    "project/ticket-*/user-*.md"
+  ],
+  "stacks": [],
+  "dependsOn": [],
+  "conflictsWith": [],
+  "integrationTicket": null
+}