chore(composer): drop the dead src/ PSR-4 autoload mapping

CLAUDE.md

@@ -70,7 +70,16 @@ inspects `echo`/`print`, so unescaped values in a returned string lint clean.
 Simple informational page under **Settings** showing plugin version (linked to GitHub releases) and feature list. Requires `manage_options` capability.
 
 ### Namespace / autoloading
-`composer.json` defines PSR-4 autoloading: `UCSC\UcscCommunicationsFunctionality\` → `src/`. No `src/` directory exists yet; this is placeholder infrastructure. Current code uses procedural `require_once` includes.
+There is none at runtime. All code is procedural, loaded by `require_once` from
+`plugin.php`, and `vendor/autoload.php` is never required — `vendor/` is gitignored and
+`npm run zip` does not ship it, so nothing autoloaded could survive packaging anyway.
+
+`composer.json` keeps only an `autoload-dev` PSR-4 mapping,
+`UCSC\UcscCommunicationsFunctionality\Tests\` → `tests/`, which the test suite does use.
+The matching production mapping to `src/` was removed in #24 as dead configuration. If
+classes are ever introduced, re-add the `autoload` block in the same commit as the first
+class, and remember that shipping them also means requiring the autoloader in `plugin.php`
+and including `vendor/` (or a production-only autoloader) in the release zip.
 
 ### Tests (`tests/`)
 PHPUnit against hand-written WordPress/ACF doubles — no WordPress install, no database,
@@ -101,9 +110,6 @@ None outstanding. All nine items from the original audit are fixed — see
 ## Known quirks
 
 - No PHPStan config, no JS build pipeline (no blocks or interactive JS).
-- `composer.json` maps PSR-4 `UCSC\UcscCommunicationsFunctionality\` → `src/`, but no
-  `src/` directory exists; all current code is procedural `require_once` includes.
-  Tracked as issue #24.
 - `plugin.php` header declares `Requires PHP: 7.0`, but `lib/functions/general.php`
   uses a `: void` return type (PHP 7.1+), so the plugin actually fatals on 7.0. The
   declared floor is wrong. Tracked separately.

ROADMAP.md

@@ -229,6 +229,30 @@ deliberate 1000-iteration guard in `have_rows()` that throws instead of hanging
 
 ---
 
+## Resolved after the audit
+
+### ~~Empty `src/` PSR-4 mapping~~
+**Status:** ✅ Fixed — [#24](https://github.com/ucsc/ucsc-communications-functionality/issues/24)
+**File:** `composer.json`
+
+`composer.json` mapped `UCSC\UcscCommunicationsFunctionality\` → `src/`, but three
+things made that mapping inert: no `src/` directory existed, no namespaced classes
+existed, and `plugin.php` never required `vendor/autoload.php`. `vendor/` is gitignored
+and `npm run zip` does not ship it, so even a populated `src/` would not have loaded in
+a released build. The mapping loaded nothing and broke nothing — it advertised an
+architecture the plugin does not have.
+
+**Fixed by:** dropping the `autoload` block. The `autoload-dev` mapping
+(`…\Tests\` → `tests/`) stays, because the test suite genuinely uses it.
+
+Building into `src/` instead was the other option and was rejected as out of scope: it
+is a restructuring of all current procedural code, plus requiring the autoloader at
+runtime and shipping `vendor/` (or a production autoloader) in the zip. If classes are
+introduced later, the `autoload` block should come back in the same commit as the first
+class, together with that packaging work.
+
+---
+
 ## Deferred / not planned
 
 - **No PHPStan config.** Worth knowing what it would and would not buy here:
@@ -240,9 +264,5 @@ deliberate 1000-iteration guard in `have_rows()` that throws instead of hanging
   for one plugin. Item 4 is covered by tests instead. Still deferred, but for
   that reason rather than "not got to it yet". See the `wp-phpstan` workflow if
   it is picked up.
-- **Empty `src/` PSR-4 mapping.** `composer.json` maps
-  `UCSC\UcscCommunicationsFunctionality\` → `src/`, but no `src/` directory
-  exists and all current code is procedural. Either build into it or drop the
-  mapping.
 - **No `uninstall.php`.** Currently correct: the plugin registers no options and
   creates no tables, so there is nothing to clean up. Revisit if that changes.

composer.json

@@ -23,11 +23,6 @@
             "dealerdirect/phpcodesniffer-composer-installer": true
         }
     },
-    "autoload": {
-        "psr-4": {
-            "UCSC\\UcscCommunicationsFunctionality\\": "src/"
-        }
-    },
     "autoload-dev": {
         "psr-4": {
             "UCSC\\UcscCommunicationsFunctionality\\Tests\\": "tests/"