restructure: move el compiler content into lang/

lang/runtime/stdlib.el

@@ -0,0 +1,42 @@
+// stdlib.el — El standard library master import file.
+//
+// Import this single file to get the full El runtime in the correct
+// dependency order. El programs can do:
+//
+//   import "../foundation/el/runtime/stdlib.el"
+//
+// or, if El is installed via tools/install.sh:
+//
+//   import "/usr/local/el/runtime/stdlib.el"
+//
+// Note: test.el is intentionally NOT included here — it is dev-only
+// and should be imported explicitly in test files only.
+//
+// Dependency order (each module may depend on earlier ones):
+//   string   — no deps
+//   math     — no deps
+//   time     — no deps
+//   env      — no deps
+//   fs       — no deps
+//   exec     — no deps
+//   json     — depends on string
+//   http     — depends on string, json
+//   state    — no deps
+//   thread   — depends on exec
+//   channel  — depends on thread, state
+//   engram   — depends on http, json, string
+//   manifest — depends on fs, json, string
+
+import "string.el"
+import "math.el"
+import "time.el"
+import "env.el"
+import "fs.el"
+import "exec.el"
+import "json.el"
+import "http.el"
+import "state.el"
+import "thread.el"
+import "channel.el"
+import "engram.el"
+import "manifest.el"