Codebase overhaul. Metaprogram proofread (part 2). Starting to get serious.

Need to rewrite the ps1 lua metaprogram sometime soonish. Getting too bloated... need to consolidate code paths.

In this push codebase structure is starting to get a bit more realized. Decided todo now to match Pikuma's linking module files vods beginning to reorganize its codebase as well.
Atoms & atom components are not in their on *.atom.c files. (Not calling it tape.c as I don't really bake tapes like that outside of the unity c file so far...)

The lua metaprogram has had additional features added to it yet again to avoid hardcoding module handling and supporting multiple atom files per-module.
Either after the camera or cd-rom section I'll be most likely pausing to fully refactor the metaprogram. Possibly as a full re-write to get the loc minimal.

scripts/passes/emission_model.lua

@@ -41,7 +41,6 @@ local duffle         = dofile(_bootstrap_dir .. "../duffle_paths.lua")
 -- Convert the recursive walk's body-relative line numbers into physical source lines once.
 -- The walker builds `line_of` from `body_text` and stamps body-relative line numbers (1..N) into `item.line` and `invocation.call_line`.
 -- This function converts those values to physical source lines at the close site with the forwarded source `line_of` closure.
---
 -- `call_line` discipline:
 --   * ROOT invocations (`inv.parent_id == 0`) receive body-relative `call_line` values directly from `M.LineIndex(body_text)` in the walker.
 --     The source `line_of` closure supplies physical lines at the close site, so this function converts each root value exactly once.
@@ -59,10 +58,9 @@ local function stamp_root_provenance(projection, atom_record, src, corpus)
 	-- `root_body_line` is the physical source line of the ATOM HEADER byte containing the opening `{`; that byte is one byte BEFORE `atom_record.body_off`.
 	-- The walker assigns line 2 to the body's first content line because line 1 is the trailing `\n` after `{`. Body-text line k therefore maps to `root_body_line + (k - 1)`.
 	-- `body_off - 1` points at the opening `{`, whose line index identifies the header line. `body_off` points after `{` and would shift every word row forward by one line.
-	local root_body_line = root_line_of(atom_record.body_off - 1)
-		or atom_record.line or 0
+	local root_body_line  = root_line_of(atom_record.body_off - 1) or atom_record.line or 0
 	local component_index = corpus.component_body_index or {}
-	local word_items = {}
+	local word_items      = {}
 
 	for _, item in ipairs(projection.items) do
 		if item.kind == "word" then word_items[#word_items + 1] = item end
@@ -102,7 +100,7 @@ local function stamp_root_provenance(projection, atom_record, src, corpus)
 	end
 
 	-- Normalize `inv.call_line` to a physical source line.
-	--   * ROOT invocations (`parent_id == 0`) carry body-relative `call_line` values from `M.LineIndex(body_text)`; convert them once with `root_body_line`.
+	--   * ROOT  invocations (`parent_id == 0`) carry body-relative `call_line` values from `M.LineIndex(body_text)`; convert them once with `root_body_line`.
 	--   * INNER invocations (`parent_id ~= 0`) carry physical `call_line` values from the component's `line_of`; retain them unchanged.
 	for _, inv in ipairs(projection.invocations) do
 		if inv.parent_id == 0 then
@@ -114,14 +112,14 @@ local function stamp_root_provenance(projection, atom_record, src, corpus)
 	-- `atoms_source_map` and `dwarf_injection` read `inv.body_lines[k]` directly from the invocation record created here.
 	-- Component words already carry physical `item.line` values from the walker's COMPONENT line index, so `body_line_for` returns them unchanged.
 	for _, inv in ipairs(projection.invocations) do
-		local sw = inv.start_word
-		local ew = inv.end_word
+		local sw  = inv.start_word
+		local ew  = inv.end_word
 		local bls = {}
 		for i = sw, ew do
 			local it = projection.items and projection.items[i]
-			if it and it.kind == "word" then
+			if    it and it.kind == "word" then
 				local fake_event = { invocation_ids = { inv.id } }
-				bls[#bls + 1] = body_line_for(fake_event, it) or 0
+				bls[#bls + 1]    = body_line_for(fake_event, it) or 0
 			end
 		end
 		inv.body_lines = bls