diff --git a/.gitignore b/.gitignore
index 9f71d48..87cc2b5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,6 +62,15 @@
 opinionated_catalog.md
 docs/superpowers
 
+#   ──────────────── Fisher-Managed Plugin Files ───────────────
+# Fisher writes these into the repo directory on install/update.
+# They are owned by Fisher — do not commit them.
+functions/fisher.fish
+completions/fisher.fish
+conf.d/sponge.fish
+functions/_sponge*.fish
+functions/sponge_*.fish
+
 #   ─────────────────── AI Sessions and Rules ──────────────────
 # Matches CLAUDE.md, .claud*, etc.
 [Cc][Ll][Aa][Uu][Dd][Ee].[Mm][Dd]
diff --git a/README.md b/README.md
index ccb7662..4a27f46 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ This config layers on top of the CachyOS base Fish configuration and adds:
 
 - **Catppuccin Mocha** theming throughout (prompt, FZF, syntax highlighting)
 - **Starship** prompt with VI key bindings
-- **Fisher** plugin manager bootstrapped automatically; plugin functionality (FZF bindings, Catppuccin theme, done notifications, autopair, puffer-fish) bundled directly with the config
+- **Fisher** plugin manager bootstrapped automatically; manages `sponge` (failed-command history filter); FZF bindings, Catppuccin theme, done, autopair, and puffer-fish are bundled directly with the config as customized versions
 - **Smart CLI wrappers** that prefer modern tools (`eza`, `bat`, `btop`, `dust`, `prettyping`) with graceful fallbacks
 - **Auto Python venv** activation on directory change (direnv-aware)
 - **Kitty terminal** deep integration for splits, tabs, and SSH
diff --git a/docs/fish-config.index b/docs/fish-config.index
index 273c354..531404f 100644
--- a/docs/fish-config.index
+++ b/docs/fish-config.index
@@ -166,6 +166,8 @@ universal=## Fish Universal Variables
 # ── Section 8: Fisher Plugins ─────────────────────────────────
 plugins=# 8. FISHER PLUGINS
 fisher=# 8. FISHER PLUGINS
+fisher-managed=## Fisher-Managed Plugins
+sponge=## Fisher-Managed Plugins
 bundled-plugins=## Bundled Plugin Functionality
 fish-plugins-manifest=## fish_plugins Manifest
 
diff --git a/docs/fish-config.md b/docs/fish-config.md
index 57c6dcc..cf34cb0 100644
--- a/docs/fish-config.md
+++ b/docs/fish-config.md
@@ -1417,12 +1417,21 @@ testing), run:
 
 Then open a new shell.
 
+## Fisher-Managed Plugins
+
+The following plugins are fully managed by Fisher. Their files are installed
+into the repo directory by Fisher and are listed in `.gitignore` — do not
+commit them. Fisher installs and updates them automatically.
+
+    jorgebucaran/fisher           Plugin manager itself
+    meaningful-ooo/sponge         Remove failed commands from history
+
 ## Bundled Plugin Functionality
 
-Plugin functionality is bundled directly with this config rather than managed
-through Fisher. The bundled versions include customizations for Fish 4.x
-compatibility and improved behavior that differ from their upstream releases.
-Installing them through Fisher would overwrite these customizations.
+The remaining plugin functionality is bundled directly with this config rather
+than managed through Fisher. The bundled versions include customizations for
+Fish 4.x compatibility and improved behavior that differ from their upstream
+releases. Installing them through Fisher would overwrite these customizations.
 
 Bundled components and their upstream origins:
 
@@ -1437,13 +1446,13 @@ versions. To update their behavior, edit the relevant bundled files directly.
 
 ## fish_plugins Manifest
 
-The `fish_plugins` file at the config root contains only the Fisher manager
-entry itself:
+The `fish_plugins` file at the config root:
 
     jorgebucaran/fisher           Plugin manager itself
+    meaningful-ooo/sponge         Remove failed commands from history
 
-To update Fisher, run `fisher update` or `fish-deps update` which calls it
-as its first step.
+To update all Fisher-managed plugins, run `fisher update` or `fish-deps
+update` which calls it as its first step.
 
 ---
 
diff --git a/fish_plugins b/fish_plugins
index 594dfc0..5dd7d8e 100644
--- a/fish_plugins
+++ b/fish_plugins
@@ -1 +1,2 @@
 jorgebucaran/fisher
+meaningful-ooo/sponge
diff --git a/requirements.md b/requirements.md
index c787555..48ed99b 100644
--- a/requirements.md
+++ b/requirements.md
@@ -116,9 +116,9 @@ Non-standard applications required by this fish shell configuration.
 
 | Tool | Description | Notes |
 |------|-------------|-------|
-| `fisher` | Fish plugin manager | Bootstrapped automatically on first run; only entry in `fish_plugins` |
+| `fisher` | Fish plugin manager | Bootstrapped automatically on first run; manages `sponge` via `fish_plugins` |
+| `meaningful-ooo/sponge` | Remove failed commands from history | Fisher-managed; files are gitignored |
 
-Plugin functionality (Catppuccin theme, FZF bindings, done notifications, autopair, puffer-fish
-expansions) is bundled directly with this config in `functions/`, `conf.d/`, and `themes/`. These are
-customized versions — do not install them via `fisher install`, as doing so would overwrite the
-bundled modifications.
+Other plugin functionality (Catppuccin theme, FZF bindings, done notifications, autopair, puffer-fish
+expansions) is bundled directly with this config in `functions/`, `conf.d/`, and `themes/` as
+customized versions — do not install them via `fisher install`.