diff --git a/.github-minimum-intelligence/install/MINIMUM-INTELLIGENCE-INSTALLER.ts b/.github-minimum-intelligence/install/MINIMUM-INTELLIGENCE-INSTALLER.ts
index 1915f1e..65b49ad 100644
--- a/.github-minimum-intelligence/install/MINIMUM-INTELLIGENCE-INSTALLER.ts
+++ b/.github-minimum-intelligence/install/MINIMUM-INTELLIGENCE-INSTALLER.ts
@@ -17,9 +17,10 @@
  * ─────────────────────────────────────────────────────────────────────────────
  *   1. Creates `.github/workflows/` and `.github/ISSUE_TEMPLATE/` if missing.
  *   2. Copies the agent workflow template into `.github/workflows/`.
- *   3. Copies the hatch issue template into `.github/ISSUE_TEMPLATE/`.
+ *   3. Copies the hatch and chat issue templates into `.github/ISSUE_TEMPLATE/`.
  *   4. Initialises the `AGENTS.md` identity file if one does not exist.
- *   5. Installs runtime dependencies via `bun install`.
+ *   5. Initialises `.pi/settings.json` with default provider config if not customised.
+ *   6. Installs runtime dependencies via `bun install`.
  */
 
 import { existsSync, mkdirSync, copyFileSync, readFileSync, writeFileSync } from "fs";
@@ -37,12 +38,16 @@ const issueTemplateDir = resolve(repoRoot, ".github", "ISSUE_TEMPLATE");
 // Source templates inside install/
 const workflowSrc = resolve(installDir, "github-minimum-intelligence-agent.yml");
 const hatchSrc = resolve(installDir, "github-minimum-intelligence-hatch.md");
+const chatSrc = resolve(installDir, "github-minimum-intelligence-chat.md");
 const agentsSrc = resolve(installDir, "MINIMUM-INTELLIGENCE-AGENTS.md");
+const settingsSrc = resolve(installDir, "settings.json");
 
 // Destination paths
 const workflowDest = resolve(workflowsDir, "github-minimum-intelligence-agent.yml");
 const hatchDest = resolve(issueTemplateDir, "github-minimum-intelligence-hatch.md");
+const chatDest = resolve(issueTemplateDir, "github-minimum-intelligence-chat.md");
 const agentsDest = resolve(minimumIntelligenceDir, "AGENTS.md");
+const settingsDest = resolve(minimumIntelligenceDir, ".pi", "settings.json");
 
 // ─── Helpers ──────────────────────────────────────────────────────────────────
 
@@ -75,8 +80,9 @@ ensureDir(issueTemplateDir);
 // 2. Copy workflow template
 copyTemplate(workflowSrc, workflowDest);
 
-// 3. Copy issue template
+// 3. Copy issue templates
 copyTemplate(hatchSrc, hatchDest);
+copyTemplate(chatSrc, chatDest);
 
 // 4. Initialise AGENTS.md if it does not already contain an identity
 if (existsSync(agentsDest)) {
@@ -90,7 +96,10 @@ if (existsSync(agentsDest)) {
   copyTemplate(agentsSrc, agentsDest);
 }
 
-// 5. Install runtime dependencies
+// 5. Initialise .pi/settings.json with defaults if not already customised
+copyTemplate(settingsSrc, settingsDest);
+
+// 6. Install runtime dependencies
 console.log("\n  Installing dependencies...\n");
 const install = Bun.spawnSync(["bun", "install"], {
   cwd: minimumIntelligenceDir,
diff --git a/.github-minimum-intelligence/install/github-minimum-intelligence-chat.md b/.github-minimum-intelligence/install/github-minimum-intelligence-chat.md
new file mode 100644
index 0000000..b4ca90f
--- /dev/null
+++ b/.github-minimum-intelligence/install/github-minimum-intelligence-chat.md
@@ -0,0 +1,6 @@
+---
+name: "💬 Chat"
+about: "Start a conversation with the AI agent"
+labels: []
+---
+
diff --git a/.github-minimum-intelligence/install/settings.json b/.github-minimum-intelligence/install/settings.json
new file mode 100644
index 0000000..632f7f0
--- /dev/null
+++ b/.github-minimum-intelligence/install/settings.json
@@ -0,0 +1,5 @@
+{
+  "defaultProvider": "anthropic",
+  "defaultModel": "claude-sonnet-4-20250514",
+  "defaultThinkingLevel": "low"
+}
diff --git a/.github/ISSUE_TEMPLATE/github-minimum-intelligence-chat.md b/.github/ISSUE_TEMPLATE/github-minimum-intelligence-chat.md
new file mode 100644
index 0000000..b4ca90f
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/github-minimum-intelligence-chat.md
@@ -0,0 +1,6 @@
+---
+name: "💬 Chat"
+about: "Start a conversation with the AI agent"
+labels: []
+---
+
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000..af2cbfc
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,18 @@
+# Security Policy
+
+## Reporting a Vulnerability
+
+If you discover a security vulnerability, **do not open a public issue.** Instead, refer to the [Incident Response Plan](.github-minimum-intelligence/docs/incident-response.md) and contact the maintainers privately.
+
+## Security Documentation
+
+| Document | Description |
+|----------|-------------|
+| [Security Assessment](.github-minimum-intelligence/docs/security-assessment.md) | Comprehensive security review covering threat model, vulnerability assessment, access control, supply chain, and compliance. |
+| [Capabilities Analysis](.github-minimum-intelligence/docs/warning-blast-radius.md) | Evidence-based audit of agent capabilities and access scope. |
+| [Incident Response Plan](.github-minimum-intelligence/docs/incident-response.md) | Step-by-step procedures for containment, eradication, recovery, and hardening. |
+| [Before You Begin](.github-minimum-intelligence/docs/final-warning.md) | Important usage information, precautions, and the governance framework. |
+
+## Supported Versions
+
+Only the latest version on the `main` branch is actively supported with security updates.
diff --git a/setup.sh b/setup.sh
index 51b3a8b..8a5c7eb 100755
--- a/setup.sh
+++ b/setup.sh
@@ -66,6 +66,11 @@ cp -R "$EXTRACTED/$TARGET_DIR" "$TARGET_DIR"
 # and should not be carried over into a fresh installation.
 rm -rf "$TARGET_DIR/state"
 
+# Reset repo-specific files to their default templates so new installations
+# do not inherit the source repo's agent identity or model configuration.
+cp "$TARGET_DIR/install/MINIMUM-INTELLIGENCE-AGENTS.md" "$TARGET_DIR/AGENTS.md"
+cp "$TARGET_DIR/install/settings.json" "$TARGET_DIR/.pi/settings.json"
+
 echo "  Copied $TARGET_DIR/"
 
 # ─── Install ───────────────────────────────────────────────────────────────────