fix(parse_readme_api): support namespace-less function names

The previous single-pattern approach used a greedy `[^.\x60]*` segment
that mis-captured H3 headers without a namespace prefix (e.g. test-lib
entrypoints documented as `### \`run_tests(ctx)\``).

Replace with a two-pass match: pattern 1 captures `### \`ns.func(...)\``
(namespaced) and pattern 2 captures `### \`func(...)\`` (no namespace).
A seen-set prevents the namespace-less pass from re-matching names
already collected by the namespaced pass.

Enables test-libs to declare a public surface in their READMEs and
satisfy --lint's missing-docs check.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

init.lua

@@ -50,6 +50,8 @@ end
 -- Returns: { documented = ["bind","unbind",...] }
 function M.parse_readme_api(markdown_string)
     local documented = {}
+    local seen = {}
+
     -- Find "## API" section start (allow trailing whitespace/content)
     local api_start = string.find(markdown_string, "\n## API[%s\n]")
     if not api_start then
@@ -59,10 +61,24 @@ function M.parse_readme_api(markdown_string)
     local api_end = string.find(markdown_string, "\n## ", api_start + 5)
     local section = string.sub(markdown_string, api_start, api_end or #markdown_string)
 
-    -- Match H3 headers: "### `[namespace.]name(...)`" — capture name portion
-    for line in string.gmatch(section, "###%s+`[^.`]*%.?([_%w]+)%s*[%(`]") do
-        table.insert(documented, line)
+    -- Two-pass matching to handle both namespace-prefixed and namespace-less
+    -- function-names in H3 headers.
+    -- Pattern 1: namespaced — "### `ns.func(...)`" -> capture "func"
+    for name in string.gmatch(section, "###%s+`[%w_]+%.([_%w]+)") do
+        if not seen[name] then
+            seen[name] = true
+            table.insert(documented, name)
+        end
     end
+    -- Pattern 2: namespace-less — "### `func(...)`" -> capture "func"
+    -- The seen-set prevents re-matching names already captured by pattern 1.
+    for name in string.gmatch(section, "###%s+`([_%w]+)%s*[%(`]") do
+        if not seen[name] then
+            seen[name] = true
+            table.insert(documented, name)
+        end
+    end
+
     return { documented = documented }
 end