Codex is per-project, not machine-wide

The installer cannot run `--runtime codex` for you: the verb requires a
project, since one of its targets is the project's own AGENTS.md. It now
detects codex and prints the command to run in each project instead.

Signed-off-by: disqualifier <dev@disqualifier.me>

README.md

@@ -31,17 +31,23 @@ already set up prints status and changes nothing.
 | --- | --- |
 | `--skill-only` | skill and hooks only; no daemon, no service |
 | `--no-node` | never provision Node; falls back to skill-only if yours is too old |
-| `--no-codex` | don't wire Codex, even if it's installed |
+| `--no-codex` | don't mention Codex, even if it's installed |
 | `--registry <url>` | install from somewhere other than the default registry |
 | `--yes` | don't prompt |
 
 Node 20 is the floor for single mode. The daemon needs 22.13 or newer, because
 it uses `node:sqlite` without a flag.
 
-Claude Code gets wired up either way. If `codex` is on your PATH that gets
-wired too — hooks, the skill, and a marked block in your project's `AGENTS.md`.
-If it isn't installed, nothing is written for it. `--no-codex` skips it on a
-box that does have it.
+Claude Code gets wired up machine-wide here. **Codex is per-project** — one of
+the things it writes is a block in the project's own `AGENTS.md` — so the
+installer can't do it for you. If `codex` is on your PATH, the installer says
+so and prints the command; run it inside each project you want Codex in:
+
+```sh
+standup install --runtime codex
+```
+
+`--no-codex` tells the installer not to mention it.
 
 Windows uses the same flags with PowerShell spelling: `-SkillOnly`, `-NoNode`,
 `-NoCodex`, `-Registry <url>`, `-Yes`.

install.ps1

@@ -243,15 +243,6 @@ if (-not $serviceOnly) {
   & standup install --runtime claude
   if ($LASTEXITCODE -ne 0) { Warn 'runtime install reported a problem; see doctor below' }
 
-  # Codex only where its binary exists: `--runtime codex` writes to
-  # $CODEX_HOME/hooks.json, ~/.agents/skills/ and the project's AGENTS.md, and
-  # leaving marked blocks for a tool that is not installed is worse than
-  # skipping. -NoCodex opts out on a box that does have it.
-  if (-not $NoCodex -and $codexBin) {
-    & standup install --runtime codex
-    if ($LASTEXITCODE -ne 0) { Warn 'codex runtime install reported a problem; see doctor below' }
-  }
-
   if ($probe -and -not $probe.HasExited) { Stop-Process -Id $probe.Id -Force -ErrorAction SilentlyContinue }
   Remove-Item -Recurse -Force $probeDir -ErrorAction SilentlyContinue
 }
@@ -309,4 +300,13 @@ Write-Host ''
 & standup code
 Write-Host ''
 Write-Host 'Next: cd <your project>; standup create'
+# Codex's runtime is per-project -- one of its three targets is the project's
+# own AGENTS.md -- so the installer cannot wire it from here: there is no
+# project yet, and the runtime step's throwaway is deleted. Name the command
+# instead, only where codex exists and the user has not opted out.
+if (-not $NoCodex -and $codexBin) {
+  Write-Host ''
+  Write-Host 'Codex is installed here. In each project you want it in:'
+  Write-Host '  standup install --runtime codex    # hooks, skill, a block in AGENTS.md'
+}
 }

install.sh

@@ -426,13 +426,6 @@ if [ "$SERVICE_ONLY" = 0 ]; then
     done
   fi
   standup install --runtime claude || warn "runtime install reported a problem; see doctor below"
-  # Codex only where its binary exists: `--runtime codex` writes to
-  # $CODEX_HOME/hooks.json, ~/.agents/skills/ and the project's AGENTS.md, and
-  # leaving marked blocks for a tool that is not installed is worse than
-  # skipping. `--no-codex` opts out on a box that does have it.
-  if [ "$NO_CODEX" = 0 ] && [ -n "$CODEX_BIN" ]; then
-    standup install --runtime codex || warn "codex runtime install reported a problem; see doctor below"
-  fi
   [ -n "$PROBE_PID" ] && { kill "$PROBE_PID" 2>/dev/null || true; wait "$PROBE_PID" 2>/dev/null || true; PROBE_PID=""; }
   rm -rf "$PROBE_DIR"; PROBE_DIR=""
 fi
@@ -501,3 +494,12 @@ say ""
 standup code 2>/dev/null || say "  (run 'standup code' for the operator code)"
 say ""
 say "Next: cd <your project> && standup create"
+# Codex's runtime is per-project -- one of its three targets is the project's
+# own AGENTS.md -- so the installer cannot wire it from here: there is no
+# project yet, and step 7's throwaway is deleted. Name the command instead,
+# only where codex exists and the user has not opted out.
+if [ "$NO_CODEX" = 0 ] && [ -n "$CODEX_BIN" ]; then
+  say ""
+  say "Codex is installed here. In each project you want it in:"
+  say "  standup install --runtime codex    # hooks, skill, a block in AGENTS.md"
+fi