Add ship-* Claude skills and plan

Introduces a skills/ directory with 8 Claude skills that reimagine ship
as a set of composable, human-driven deployment tools backed by Claude's
reasoning rather than a rigid CLI.

Skills:
- ship-setup: one-time VPS config, saves host to ~/.config/ship/config.json
- ship-status: derives live state from server, no local state file
- ship-env: read/write env vars with merge semantics, never overwrites
- ship-binary: deploy Go binaries with SQLite backup, correct restart behavior
- ship-caddy: manage per-app Caddyfile with validate-before-reload
- ship-service: systemd management and log inspection
- ship-static: rsync static sites with SPA routing support
- ship-deploy: orchestration runbook tying the others together

Also adds SKILLS_PLAN.md documenting the architecture and rationale.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/skills/ship-status/SKILL.md b/skills/ship-status/SKILL.md
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+---
+name: ship-status
+description: Show what's running on a ship VPS. Derives state from the server — no local state file. Use when you want to know what apps are deployed, what ports they use, and whether they're running.
+argument-hint: "[host-nickname]"
+---
+
+# ship-status
+
+Show the current state of all deployments on a ship VPS by reading directly from the server.
+
+## Read Config
+
+Load the host from `~/.config/ship/config.json`. Use the default host unless a nickname was specified:
+
+```bash
+python3 -c "
+import json, os, sys
+cfg = json.load(open(os.path.expanduser('~/.config/ship/config.json')))
+nick = sys.argv[1] if len(sys.argv) > 1 else cfg['default']
+h = cfg['hosts'][nick]
+print(h['host'])
+print(h['domain'])
+" <nickname-or-blank>
+```
+
+## Gather Server State
+
+Run all of these in a single SSH session to minimize round trips:
+
+**Systemd services (binary/docker apps):**
+```bash
+ssh <host> "systemctl list-units --type=service --state=active --no-pager --no-legend | grep -v '@' | awk '{print \$1}' | xargs -I{} sh -c 'name=\$(echo {} | sed s/.service//); port=\$(cat /etc/ship/ports/\$name 2>/dev/null); env=\$(cat /etc/ship/env/\$name.env 2>/dev/null | grep SHIP_URL | cut -d= -f2); echo \"\$name|\$port|\$env\"' 2>/dev/null | grep '|'"
+```
+
+**Static sites:**
+```bash
+ssh <host> "ls /var/www/ 2>/dev/null"
+```
+
+**Caddy configs (domains):**
+```bash
+ssh <host> "ls /etc/caddy/sites-enabled/ 2>/dev/null | grep -v '^$'"
+```
+
+**Caddy status:**
+```bash
+ssh <host> "systemctl is-active caddy"
+```
+
+**Disk usage for app data dirs:**
+```bash
+ssh <host> "du -sh /var/lib/*/  2>/dev/null"
+```
+
+## Present Results
+
+Format as a clean summary, for example:
+
+```
+HOST: prod (ubuntu@1.2.3.4)
+
+SERVICES
+  foodtracker     running   :9013   https://foodtracker.example.com
+  myapi           running   :9014   https://api.example.com
+
+STATIC SITES
+  mysite                          https://mysite.example.com
+
+CADDY: running
+
+DATA
+  /var/lib/foodtracker/   48M
+  /var/lib/myapi/          2M
+```
+
+If a service appears in `/etc/ship/ports/` but is not active in systemd, flag it as **stopped**.
+
+If a Caddy config exists for a name but no service or static site matches, flag it as **orphaned config**.
+
+## Notes
+
+- No local state file is consulted — everything comes from the server
+- If `~/.config/ship/config.json` doesn't exist, tell the user to run `/ship-setup` first
+- If a nickname is given that doesn't exist in config, list available nicknames
+- Use default host if no argument given