diff --git a/guidance/homeboy.sh b/guidance/homeboy.sh
index 0046d5f..9fb35f2 100644
--- a/guidance/homeboy.sh
+++ b/guidance/homeboy.sh
@@ -74,34 +74,64 @@ guidance_register() {
   fi
 }
 
+# _guidance_homeboy_php_quote <value>
+#
+# Escape a filesystem path for embedding in a PHP single-quoted string
+# literal. Only backslash and single-quote are special inside '...'.
+_guidance_homeboy_php_quote() {
+  local value="$1"
+  value="${value//\\/\\\\}"
+  value="${value//\'/\\\'}"
+  printf '%s' "$value"
+}
+
+# Emit the live PHP block with the resolved homeboy path baked in.
+#
+# The binary is resolved ONCE here, at sync time, using the same `type -P`
+# lookup as guidance_applies(). The emitted PHP checks that one absolute
+# path instead of walking getenv('PATH') at compose time.
+#
+# This matters because AGENTS.md is recomposed by whatever process happens
+# to trigger it — PHP-FPM, cron, a plugin upgrade, a WP-CLI call with a
+# trimmed environment. Those do not inherit an interactive PATH, so a
+# PATH-based probe reported "homeboy absent" on a host where homeboy was
+# installed and executable, and the section silently deleted itself (#575).
+#
+# The #254 live gate is preserved: the emitted code still re-checks
+# is_executable() at every compose, so a host that loses the binary stops
+# emitting the section with no wp-coding-agents sync.
+#
 # Quoted heredoc ('PHP_BLOCK') so PHP $variables, backticks, and ${...} are
-# emitted verbatim — bash never touches them.
+# emitted verbatim — bash never touches them. The single baked value is
+# substituted afterward via a placeholder, preserving that property.
 _guidance_homeboy_live_block() {
-  cat <<'PHP_BLOCK'
+  local homeboy_path
+  homeboy_path="$(type -P homeboy 2>/dev/null || true)"
+  if [ -z "$homeboy_path" ]; then
+    return 1
+  fi
+
+  local quoted_path
+  quoted_path="$(_guidance_homeboy_php_quote "$homeboy_path")"
+
+  cat <<'PHP_BLOCK' | sed "s|__WP_CODING_AGENTS_HOMEBOY_BIN__|${quoted_path//|/\\|}|g"
     // BEGIN agents-md-guidance:homeboy-cli
-    if ( ! function_exists( 'wp_coding_agents_homeboy_binary' ) ) {
-        function wp_coding_agents_homeboy_binary() {
-            $homeboy = null;
-            $path_env = ( is_callable( 'getenv' ) ) ? getenv( 'PATH' ) : false;
-            if ( is_string( $path_env ) && $path_env !== '' ) {
-                foreach ( explode( PATH_SEPARATOR, $path_env ) as $dir ) {
-                    if ( $dir === '' ) {
-                        continue;
-                    }
-                    $candidate = rtrim( $dir, '/' ) . '/homeboy';
-                    if ( @is_executable( $candidate ) ) {
-                        $homeboy = $candidate;
-                        break;
-                    }
-                }
-            }
-            return $homeboy;
+    // Absolute path resolved by wp-coding-agents at sync time. Checked live
+    // at every compose so losing the binary drops the section (#254), but
+    // never re-derived from the composing process's PATH (#575).
+    if ( ! defined( 'WP_CODING_AGENTS_HOMEBOY_BIN' ) ) {
+        define( 'WP_CODING_AGENTS_HOMEBOY_BIN', '__WP_CODING_AGENTS_HOMEBOY_BIN__' );
+    }
+
+    if ( ! function_exists( 'wp_coding_agents_homeboy_available' ) ) {
+        function wp_coding_agents_homeboy_available() {
+            return @is_executable( WP_CODING_AGENTS_HOMEBOY_BIN );
         }
     }
 
     if ( ! function_exists( 'wp_coding_agents_render_homeboy_cli_section' ) ) {
         function wp_coding_agents_render_homeboy_cli_section() {
-            if ( wp_coding_agents_homeboy_binary() === null ) {
+            if ( ! wp_coding_agents_homeboy_available() ) {
                 return '';
             }
 
@@ -138,7 +168,7 @@ MD;
     }
 
     // Gate registration itself at composition time.
-    if ( wp_coding_agents_homeboy_binary() !== null ) {
+    if ( wp_coding_agents_homeboy_available() ) {
         \DataMachine\Engine\AI\SectionRegistry::register(
             'AGENTS.md',
             'homeboy-cli',
diff --git a/tests/agents-md-guidance.sh b/tests/agents-md-guidance.sh
index ff5911f..c82caa2 100755
--- a/tests/agents-md-guidance.sh
+++ b/tests/agents-md-guidance.sh
@@ -416,6 +416,53 @@ HOMEBOY_HASH_BEFORE=$(file_hash "$MU_FILE")
 guidance_sync_unit homeboy
 HOMEBOY_HASH_AFTER=$(file_hash "$MU_FILE")
 assert_eq "$HOMEBOY_HASH_AFTER" "$HOMEBOY_HASH_BEFORE" "Homeboy guidance generation is idempotent"
+echo "==> Homeboy guidance survives a compose with a minimal PATH (#575)"
+# The composing process is not always an interactive shell. PHP-FPM, cron, a
+# plugin upgrade, or a WP-CLI call with a trimmed environment all recompose
+# AGENTS.md without an interactive PATH. Resolving the binary from
+# getenv('PATH') at compose time therefore deleted the section on hosts where
+# Homeboy was installed and executable.
+assert_contains "$MU_FILE" "$TMP/homeboy-bin/homeboy" "Homeboy guidance bakes the absolute binary path"
+if grep -Fq "getenv( 'PATH' )" "$MU_FILE"; then
+  echo "  FAIL Homeboy guidance still resolves the binary from the ambient PATH"
+  FAILED=$((FAILED + 1))
+else
+  echo "  ok   Homeboy guidance does not read the ambient PATH"
+fi
+
+# Execute the generated block with a deliberately empty PATH. This is the
+# exact condition that silently dropped the section before the fix.
+MINIMAL_PATH_SHIM="$TMP/minimal-path-shim.php"
+cat > "$MINIMAL_PATH_SHIM" <<PHP
+<?php
+define( 'ABSPATH', '/' );
+\$GLOBALS['actions'] = [];
+\$GLOBALS['filters'] = [];
+\$GLOBALS['sections'] = [];
+class MinimalPathSectionRegistry {
+    public static function register( \$file, \$section, \$priority, \$callback, \$metadata = [] ): void {
+        \$GLOBALS['sections'][ \$section ] = \$callback;
+    }
+}
+class_alias( 'MinimalPathSectionRegistry', 'DataMachine\\\\Engine\\\\AI\\\\SectionRegistry' );
+function add_action( \$tag, \$callback, \$priority = 10 ) { \$GLOBALS['actions'][\$tag][\$priority][] = \$callback; }
+function add_filter( \$tag, \$callback, \$priority = 10 ) { \$GLOBALS['filters'][\$tag][\$priority][] = \$callback; }
+function apply_filters( \$tag, \$value ) { return \$value; }
+function datamachine_agents_md_enabled(): bool { return true; }
+// The composing process has no usable PATH — the #575 condition.
+putenv( 'PATH=' );
+require '$MU_FILE';
+ksort( \$GLOBALS['actions']['datamachine_sections'] );
+foreach ( \$GLOBALS['actions']['datamachine_sections'] as \$callbacks ) { foreach ( \$callbacks as \$callback ) { \$callback(); } }
+\$rendered = isset( \$GLOBALS['sections']['homeboy-cli'] ) ? (string) \$GLOBALS['sections']['homeboy-cli']() : '';
+echo json_encode([
+    'registered' => isset( \$GLOBALS['sections']['homeboy-cli'] ),
+    'renders'    => str_contains( \$rendered, '## Homeboy' ),
+]);
+PHP
+RESULT=$(php "$MINIMAL_PATH_SHIM")
+assert_eq "$RESULT" '{"registered":true,"renders":true}' "Homeboy guidance still composes with an empty PATH"
+
 rm "$TMP/homeboy-bin/homeboy"
 PATH="$TMP/homeboy-bin:/usr/bin:/bin"
 export PATH