chore: consolidate new foundation and archive v1 (#1495)

v1/skills/glpi-followup/SKILL.md

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+# Skill: glpi-followup — Add a Followup to a GLPI Ticket
+
+> Post a followup (comment / progress note / resolution writeup) to a GLPI ticket.
+> This documents work but does **not** change the ticket status — to close a ticket
+> out, follow with **[[glpi-solve]]** to set status to Solved.
+
+## When to use
+
+- Recording progress, a decision, or a root-cause/resolution note on a ticket.
+- The documentation step that usually precedes closing a ticket out (`glpi-solve`).
+
+## Critical quirk
+
+Use the **top-level `/ITILFollowup` endpoint**, NOT `/Ticket/<id>/ITILFollowup`. The
+sub-resource path returns permission errors even with a Super-Admin profile.
+
+## Procedure
+
+### 1. Session + creds
+
+```bash
+SESSION=$(~/.config/mosaic/tools/glpi/session-init.sh -q)
+source ~/.config/mosaic/tools/_lib/credentials.sh && load_credentials glpi
+```
+
+### 2. Post the followup
+
+```bash
+TICKET_ID=<id>
+CONTENT="<the followup text>"
+curl -sk -X POST "${GLPI_URL}/ITILFollowup" \
+  -H "App-Token: $GLPI_APP_TOKEN" \
+  -H "Session-Token: $SESSION" \
+  -H "Content-Type: application/json" \
+  -d "$(jq -n --argjson id "$TICKET_ID" --arg c "$CONTENT" \
+        '{input:{itemtype:"Ticket", items_id:$id, content:$c}}')"
+```
+
+Expect HTTP 201. Building the payload with `jq` keeps quotes/newlines in the content safe.
+
+### 3. Long or multi-paragraph content
+
+Write the note to a file first, then read it into the payload:
+
+```bash
+curl -sk -X POST "${GLPI_URL}/ITILFollowup" \
+  -H "App-Token: $GLPI_APP_TOKEN" -H "Session-Token: $SESSION" \
+  -H "Content-Type: application/json" \
+  -d "$(jq -n --argjson id "$TICKET_ID" --rawfile c /path/to/note.md \
+        '{input:{itemtype:"Ticket", items_id:$id, content:$c}}')"
+```
+
+## Guardrails
+
+- Never echo the GLPI app/user/session tokens.
+- A followup alone leaves the ticket open. If the work is done, run **[[glpi-solve]]** next.