revert: Restore conditional the_content filter usage

- Reverted nuclear option from v0.4.8
- get_post_data() now uses the_content filter conditionally
- All other protections remain in place
- Memory leak investigation to be continued later

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,11 +7,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.9] - 2026-02-02
+
+### Changed
+
+- **Reverted nuclear option** - Restored conditional the_content filter usage
+  - `get_post_data()` now uses the_content filter only when NOT in shortcode context, NOT at depth > 1, and NOT loading page template
+  - All other protections remain in place (render depth, page template loading flag, main template lock, shortcode context)
+  - Memory leak investigation to be continued later
+
 ## [0.4.8] - 2026-02-02
 
 ### Fixed
 
-- **Nuclear option: NEVER apply the_content filter** - Completely removed the_content filter usage
+- **Nuclear option: NEVER apply the_content filter** - Completely removed the_content filter usage (reverted in 0.4.9)
   - `get_post_data()` now ALWAYS strips shortcodes and uses raw content
   - NEVER calls `apply_filters('the_content', ...)` or `get_the_excerpt()`
   - FediStream posts don't need shortcode processing in their content anyway
@@ -274,7 +283,8 @@ Initial release of WP FediStream - a WordPress plugin for streaming music over A
 
 ---
 
-[Unreleased]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.8...HEAD
+[Unreleased]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.9...HEAD
+[0.4.9]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.8...v0.4.9
 [0.4.8]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.7...v0.4.8
 [0.4.7]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.6...v0.4.7
 [0.4.6]: https://src.bundespruefstelle.ch/magdev/wp-fedistream/compare/v0.4.5...v0.4.6

includes/Frontend/TemplateLoader.php

@@ -289,18 +289,34 @@ class TemplateLoader {
         // Track recursion to prevent infinite loops from shortcodes in content.
         ++self::$recursion_depth;
 
-        // ALWAYS skip the_content filter to prevent any possible recursion.
-        // FediStream posts don't need shortcode processing in their content.
-        // This is the nuclear option but it guarantees no recursion.
-        $excerpt = $post->post_excerpt;
-        if ( empty( $excerpt ) ) {
-            // Generate a simple excerpt without triggering the_content filter.
-            $excerpt = wp_trim_words( wp_strip_all_tags( $post->post_content ), 55, '…' );
+        // Skip the_content filter if:
+        // 1. We're in a shortcode context (prevents recursive shortcode processing)
+        // 2. We're at depth > 1 (nested data loading)
+        // 3. We're loading a page template
+        $skip_content_filter = self::$shortcode_context_depth > 0
+            || self::$recursion_depth > 1
+            || self::$loading_page_template;
+
+        // When skipping content filter, use raw excerpt to avoid get_the_excerpt()
+        // triggering the_content filter internally when generating auto-excerpts.
+        if ( $skip_content_filter ) {
+            $excerpt = $post->post_excerpt;
+            if ( empty( $excerpt ) ) {
+                // Generate a simple excerpt without triggering the_content filter.
+                $excerpt = wp_trim_words( wp_strip_all_tags( $post->post_content ), 55, '…' );
+            }
+        } else {
+            $excerpt = get_the_excerpt( $post );
         }
 
-        // Strip shortcodes and sanitize content - never apply the_content filter.
-        $content = strip_shortcodes( $post->post_content );
-        $content = wp_kses_post( $content );
+        // When skipping content filter, strip shortcodes to prevent them from
+        // being processed by anything else that might call do_shortcode on the output.
+        if ( $skip_content_filter ) {
+            $content = strip_shortcodes( $post->post_content );
+            $content = wp_kses_post( $content );
+        } else {
+            $content = apply_filters( 'the_content', $post->post_content );
+        }
 
         $data = array(
             'id'        => $post->ID,

wp-fedistream.php

@@ -3,7 +3,7 @@
  * Plugin Name: WP FediStream
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wp-fedistream
  * Description: Stream music over ActivityPub - Build your own music streaming platform for Musicians and Labels.
- * Version: 0.4.8
+ * Version: 0.4.9
  * Requires at least: 6.4
  * Requires PHP: 8.3
  * Author: Marco Graetsch
@@ -26,7 +26,7 @@ if ( ! defined( 'ABSPATH' ) ) {
  *
  * @var string
  */
-define( 'WP_FEDISTREAM_VERSION', '0.4.8' );
+define( 'WP_FEDISTREAM_VERSION', '0.4.9' );
 
 /**
  * Plugin file path.