docs(mother): add Python deps + RPC_PROMPT to first-run checklist

packaging/mother/MOTHER-SETUP.md

@@ -113,14 +113,22 @@ copy. `setup-mother.sh` overwrites it, but record what was there:
 ls -l /usr/local/bin/node-register-mcp 2>/dev/null || echo "(none installed yet)"
 ```
 
-**3. Run the canonical setup.** Copy the printed private key straight to the
-node seed (step 8) — do not leave it in shell scrollback or a logged session.
+**3. Install Python dependencies for MCP servers.** `geodesic-dome-mcp` needs
+numpy and Pillow at runtime. Install them before running setup so the MCP tool
+is functional immediately:
+
+```sh
+sudo pkg install -y py311-numpy py311-Pillow
+```
+
+**4. Run the canonical setup.** Copy the printed private key straight to the
+node seed (step 9) — do not leave it in shell scrollback or a logged session.
 
 ```sh
 sudo ./packaging/mother/setup-mother.sh
 ```
 
-**4. The installed `node-register-mcp` is the hardened version.**
+**5. The installed `node-register-mcp` is the hardened version.**
 The safe tool uses parameterized `psql -v :'var'` against `hive_nodes`; the old
 one used `E'${...}'` string interpolation (SQL-injectable). Verify:
 
@@ -129,7 +137,7 @@ grep -c "E'"        /usr/local/bin/node-register-mcp   # expect 0
 grep -c hive_nodes  /usr/local/bin/node-register-mcp   # expect > 0
 ```
 
-**5. The schema migrated, data preserved.** On an existing DB, `usb_nodes`
+**6. The schema migrated, data preserved.** On an existing DB, `usb_nodes`
 should be renamed to `hive_nodes` (not duplicated), with the `node_type` column:
 
 ```sh
@@ -138,7 +146,7 @@ sudo -u postgres psql -d mother_hive -c "SELECT to_regclass('public.hive_nodes')
 sudo -u postgres psql -d mother_hive -c "\d hive_nodes" | grep node_type            # column present
 ```
 
-**6. Peer auth works for the `colibri` role.** This is what `node-register-mcp`
+**7. Peer auth works for the `colibri` role.** This is what `node-register-mcp`
 relies on (no password):
 
 ```sh
@@ -152,7 +160,7 @@ any generic `local all all` line (pg_hba is first-match):
 HBA=$(sudo -u postgres psql -tAc 'SHOW hba_file'); sudo grep -n 'mother_hive .*colibri .*peer' "$HBA"
 ```
 
-**7. External MCP registry has all three servers** (jq-merge preserved any
+**8. External MCP registry has all three servers** (jq-merge preserved any
 existing entries):
 
 ```sh
@@ -160,7 +168,7 @@ jq '.servers | keys' /usr/local/etc/colibri/external-mcp.json
 # expect: build-colibri (mother-build) / geodesic-dome / node-register present
 ```
 
-**8. The SSH forced-command boundary allowlists.** A non-allowlisted command
+**9. The SSH forced-command boundary allowlists.** A non-allowlisted command
 must be rejected, not run:
 
 ```sh
@@ -168,18 +176,29 @@ ssh colibri@localhost 'rm -rf /'   # expect: rejected (exit 1), nothing runs
 ssh colibri@localhost tools        # expect: MCP tool list
 ```
 
-**9. Daemon picked up the env and is live:**
+**10. Daemon picked up the env and is live:**
 
 ```sh
 grep -E 'COLIBRI_AUTOSPAWN|COLIBRI_MCP_EXTERNAL_CALL' /usr/local/etc/colibri/provider.env
 service colibri_daemon status
 ```
 
-**10. End-to-end (optional, with a real DEEPSEEK key present):** register a
+**11. COLIBRI_AUTOSPAWN_RPC_PROMPT for spawned zot agents.** When a
+USB node spawns a zot agent, the agent needs to call `node_register` on
+boot. Set this in `provider.env` so autospawned zot processes pick it up:
+
+```sh
+grep -q 'COLIBRI_AUTOSPAWN_RPC_PROMPT' /usr/local/etc/colibri/provider.env || \
+  echo 'COLIBRI_AUTOSPAWN_RPC_PROMPT="call node_register with current hw-probe output"' \
+    | tee -a /usr/local/etc/colibri/provider.env
+service colibri_daemon restart
+```
+
+**12. End-to-end (optional, with a real DEEPSEEK key present):** register a
 sample node and confirm the `derive_capabilities()` trigger populated
 `capabilities` — see the [Verification](#verification) section below.
 
-**11. Key hygiene:** the mother-mcp private key from step 3 is on the node seed
+**13. Key hygiene:** the mother-mcp private key from step 4 is on the node seed
 (`CLAWDIESEED/colibri/ssh/mother-mcp`) and nowhere else persistent. See
 [Key management](#key-management).