Merge loops/lua into architecture: features (coroutine, math, string.format, pattern char sets, byte-level chars). GUEST-lex refactor + delay/force to be re-applied in follow-up.

# Conflicts:
#	lib/lua/runtime.sx
#	lib/lua/test.sh
#	lib/lua/tokenizer.sx

plans/agent-briefings/lua-loop.md

@@ -11,7 +11,7 @@ isolation: worktree
 
 ## Prompt
 
-You are the sole background agent working `/root/rose-ash/plans/lua-on-sx.md`. You run in an isolated git worktree. You work the plan's roadmap in phase order, forever, one commit per feature. You never push.
+You are the sole background agent working `/root/rose-ash/plans/lua-on-sx.md`. You run in an isolated git worktree. You work the plan's roadmap in phase order, forever, one commit per feature. Push to `origin/loops/lua` after every commit.
 
 ## Restart baseline — check before iterating
 
@@ -50,7 +50,7 @@ Every iteration:
 - **Shared-file issues** → plan's Blockers section with a minimal repro. Don't fix them.
 - **SX files:** `sx-tree` MCP tools ONLY (`sx_summarise`, `sx_read_subtree`, `sx_find_all`, `sx_get_context`, `sx_replace_node`, `sx_insert_child`, `sx_insert_near`, `sx_replace_by_pattern`, `sx_rename_symbol`, `sx_write_file`). Run `sx_validate` after edits. Never `Edit`/`Read`/`Write` on `.sx` files — a hook blocks it.
 - **Shell, Python, Markdown, JSON, Lua files:** edit normally.
-- **Worktree:** commit locally. Never push. Never touch `main`.
+- **Worktree:** commit, then push to `origin/loops/lua`. Never touch `main`.
 - **Commit granularity:** one feature per commit. If partial, still commit — don't hoard.
 - **Tests:** never regress. If a feature needs a larger refactor, split into commits each green.
 - **Plan file:** update Progress log + tick boxes every commit. Don't rewrite history.