cross-skill opt-out and gather system info via shell

- "Never ask again" now removes diagnostics from both skills
- Added shell commands to gather version, platform, arch, node version
- Show only properties object to user, not api_key/distinct_id
- Write full PostHog payload to temp file, send with curl -d @file

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

.claude/skills/setup/diagnostics.md

@@ -2,15 +2,26 @@
 
 After setup is complete, offer to send anonymous diagnostics.
 
-## 1. Write the event
+## 1. Gather system info
 
-Write a JSON file to `/tmp/nanoclaw-diagnostics.json` with the setup outcome. Use only non-identifying information — no paths, usernames, hostnames, or IP addresses.
+```bash
+node -p "require('./package.json').version"
+uname -s
+uname -m
+node -p "process.versions.node.split('.')[0]"
+```
+
+## 2. Write the event
+
+Write a JSON file to `/tmp/nanoclaw-diagnostics.json`. Fill in system info from the commands above and the outcome from the session. Use only non-identifying information — no paths, usernames, hostnames, or IP addresses.
 
 ```json
 {
+  "api_key": "phc_fx1Hhx9ucz8GuaJC8LVZWO8u03yXZZJJ6ObS4yplnaP",
   "event": "setup_complete",
-  "success": true,
+  "distinct_id": "<generate a uuid>",
   "properties": {
+    "success": true,
     "nanoclaw_version": "1.2.21",
     "os_platform": "darwin",
     "arch": "arm64",
@@ -22,36 +33,33 @@ Write a JSON file to `/tmp/nanoclaw-diagnostics.json` with the setup outcome. Us
 }
 ```
 
-Fill in the values based on what happened during the session.
+## 3. Show and ask
-
-## 2. Show and ask
 
 Show the contents of the file to the user and ask:
 
 > "Would you like to send anonymous diagnostics to help improve NanoClaw? Here's exactly what would be sent:"
 >
-> (show JSON)
+> (show the properties object only — not the api_key or distinct_id)
 >
 > **Yes** / **No** / **Never ask again**
 
 Use AskUserQuestion.
 
-## 3. Handle response
+## 4. Handle response
 
-**Yes**: Send it:
+**Yes**:
 ```bash
-curl -s -X POST https://us.i.posthog.com/capture/ \
+curl -s -X POST https://us.i.posthog.com/capture/ -H 'Content-Type: application/json' -d @/tmp/nanoclaw-diagnostics.json
-  -H 'Content-Type: application/json' \
-  -d "{\"api_key\":\"phc_fx1Hhx9ucz8GuaJC8LVZWO8u03yXZZJJ6ObS4yplnaP\",\"event\":\"$(jq -r .event /tmp/nanoclaw-diagnostics.json)\",\"distinct_id\":\"$(uuidgen)\",\"properties\":$(jq .properties /tmp/nanoclaw-diagnostics.json)}"
 rm /tmp/nanoclaw-diagnostics.json
 ```
 Confirm: "Diagnostics sent."
 
 **No**: `rm /tmp/nanoclaw-diagnostics.json` — do nothing else.
 
-**Never ask again**: Replace the contents of this file (`diagnostics.md`) with:
+**Never ask again**: Opt out of diagnostics in both setup and update-nanoclaw:
-```
+1. Replace the contents of `.claude/skills/setup/diagnostics.md` with just `# Diagnostics — opted out`
-# Diagnostics — opted out
+2. Replace the contents of `.claude/skills/update-nanoclaw/diagnostics.md` with just `# Diagnostics — opted out`
-```
+3. Remove the "Diagnostics (Optional)" section from the end of both `.claude/skills/setup/SKILL.md` and `.claude/skills/update-nanoclaw/SKILL.md`
-Then remove the "Diagnostics (Optional)" section from the end of `SKILL.md` in this skill directory. Delete `/tmp/nanoclaw-diagnostics.json`.
+4. `rm /tmp/nanoclaw-diagnostics.json`
+
 Confirm: "Got it — you won't be asked again."

.claude/skills/update-nanoclaw/diagnostics.md

@@ -2,15 +2,29 @@
 
 After the update is complete, offer to send anonymous diagnostics.
 
-## 1. Write the event
+## 1. Gather system info
 
-Write a JSON file to `/tmp/nanoclaw-diagnostics.json` with the update outcome. Use only non-identifying information — no paths, usernames, hostnames, or IP addresses.
+```bash
+node -p "require('./package.json').version"
+uname -s
+uname -m
+node -p "process.versions.node.split('.')[0]"
+git log -1 --format=%ci HEAD@{1} 2>/dev/null || echo "unknown"
+```
+
+The last command gets the date of the previous HEAD (before the update) to estimate version age.
+
+## 2. Write the event
+
+Write a JSON file to `/tmp/nanoclaw-diagnostics.json`. Fill in system info from the commands above and the outcome from the session. Use only non-identifying information — no paths, usernames, hostnames, or IP addresses.
 
 ```json
 {
+  "api_key": "phc_fx1Hhx9ucz8GuaJC8LVZWO8u03yXZZJJ6ObS4yplnaP",
   "event": "update_complete",
-  "success": true,
+  "distinct_id": "<generate a uuid>",
   "properties": {
+    "success": true,
     "nanoclaw_version": "1.2.21",
     "os_platform": "darwin",
     "arch": "arm64",
@@ -24,36 +38,33 @@ Write a JSON file to `/tmp/nanoclaw-diagnostics.json` with the update outcome. U
 }
 ```
 
-Fill in the values based on what happened during the session.
+## 3. Show and ask
-
-## 2. Show and ask
 
 Show the contents of the file to the user and ask:
 
 > "Would you like to send anonymous diagnostics to help improve NanoClaw? Here's exactly what would be sent:"
 >
-> (show JSON)
+> (show the properties object only — not the api_key or distinct_id)
 >
 > **Yes** / **No** / **Never ask again**
 
 Use AskUserQuestion.
 
-## 3. Handle response
+## 4. Handle response
 
-**Yes**: Send it:
+**Yes**:
 ```bash
-curl -s -X POST https://us.i.posthog.com/capture/ \
+curl -s -X POST https://us.i.posthog.com/capture/ -H 'Content-Type: application/json' -d @/tmp/nanoclaw-diagnostics.json
-  -H 'Content-Type: application/json' \
-  -d "{\"api_key\":\"phc_fx1Hhx9ucz8GuaJC8LVZWO8u03yXZZJJ6ObS4yplnaP\",\"event\":\"$(jq -r .event /tmp/nanoclaw-diagnostics.json)\",\"distinct_id\":\"$(uuidgen)\",\"properties\":$(jq .properties /tmp/nanoclaw-diagnostics.json)}"
 rm /tmp/nanoclaw-diagnostics.json
 ```
 Confirm: "Diagnostics sent."
 
 **No**: `rm /tmp/nanoclaw-diagnostics.json` — do nothing else.
 
-**Never ask again**: Replace the contents of this file (`diagnostics.md`) with:
+**Never ask again**: Opt out of diagnostics in both setup and update-nanoclaw:
-```
+1. Replace the contents of `.claude/skills/setup/diagnostics.md` with just `# Diagnostics — opted out`
-# Diagnostics — opted out
+2. Replace the contents of `.claude/skills/update-nanoclaw/diagnostics.md` with just `# Diagnostics — opted out`
-```
+3. Remove the "Diagnostics (Optional)" section from the end of both `.claude/skills/setup/SKILL.md` and `.claude/skills/update-nanoclaw/SKILL.md`
-Then remove the "Diagnostics (Optional)" section from the end of `SKILL.md` in this skill directory. Delete `/tmp/nanoclaw-diagnostics.json`.
+4. `rm /tmp/nanoclaw-diagnostics.json`
+
 Confirm: "Got it — you won't be asked again."