diff --git a/integrations.json b/integrations.json
index 93bc37ae..44e521c5 100644
--- a/integrations.json
+++ b/integrations.json
@@ -1028,7 +1028,7 @@
       "name": "Amp",
       "category": "coding",
       "type": "plugin",
-      "version": "0.1.0",
+      "version": "0.1.1",
       "directory": "nowledge-mem-amp-plugin",
       "transport": "cli+http",
       "capabilities": {
diff --git a/nowledge-mem-amp-plugin/CHANGELOG.md b/nowledge-mem-amp-plugin/CHANGELOG.md
index 2a86c3b1..64887453 100644
--- a/nowledge-mem-amp-plugin/CHANGELOG.md
+++ b/nowledge-mem-amp-plugin/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [0.1.1] - 2026-08-10
+
+### Fixed
+
+- Restored the Amp-discoverable root plugin entry at `plugins/nowledge-mem.ts`
+  during install and update. Existing `0.1.0` installs may have copied the
+  bundle without the root entry, so Amp could miss the plugin.
+- Hardened install rollback so failed updates preserve the previous entry,
+  bundle, and skill, and failed first installs do not leave a partial Amp
+  plugin behind.
+
 ## [0.1.0] - 2026-08-08
 
 ### Added
diff --git a/nowledge-mem-amp-plugin/README.md b/nowledge-mem-amp-plugin/README.md
index ec5eb623..2bbaf74d 100644
--- a/nowledge-mem-amp-plugin/README.md
+++ b/nowledge-mem-amp-plugin/README.md
@@ -133,7 +133,7 @@ For multi-agent setups, set `NMEM_AGENT_ID=<agent-slug>` per spawned Amp worker.
 
 - **nmem not found.** Install with `pip install nmem-cli`, or on Arch Linux `yay -S nmem-cli` / `paru -S nmem-cli`, then run `nmem status` to verify.
 - **Server not responding.** Start the Nowledge Mem desktop app, or check `nmem status` for diagnostics.
-- **Plugin not loading.** Re-run `./scripts/install.sh`, confirm the files exist under `~/.config/amp/plugins/nowledge-mem/`, and restart Amp.
+- **Plugin not loading.** Re-run `bash nowledge-mem-amp-plugin/scripts/install.sh` from the `community` repository root, confirm the root entry `${XDG_CONFIG_HOME:-$HOME/.config}/amp/plugins/nowledge-mem.ts` and the bundle beside it exist, and restart Amp.
 
 ## Links
 
diff --git a/nowledge-mem-amp-plugin/package.json b/nowledge-mem-amp-plugin/package.json
index 24d9b45e..ad0dfaf9 100644
--- a/nowledge-mem-amp-plugin/package.json
+++ b/nowledge-mem-amp-plugin/package.json
@@ -1,6 +1,6 @@
 {
   "name": "amp-nowledge-mem",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Nowledge Mem plugin for Amp. Cross-tool knowledge with agent-end thread capture, Context Bundle, search, save, and handoffs.",
   "type": "module",
   "main": "src/index.ts",
diff --git a/nowledge-mem-amp-plugin/scripts/install.sh b/nowledge-mem-amp-plugin/scripts/install.sh
index ff5890f7..7ad3ba29 100755
--- a/nowledge-mem-amp-plugin/scripts/install.sh
+++ b/nowledge-mem-amp-plugin/scripts/install.sh
@@ -2,11 +2,15 @@
 #
 # Installs the Nowledge Mem plugin and skill into Amp's per-user directories.
 #
+#   entry  -> ${XDG_CONFIG_HOME:-~/.config}/amp/plugins/nowledge-mem.ts
 #   plugin -> ${XDG_CONFIG_HOME:-~/.config}/amp/plugins/nowledge-mem/
 #   skill  -> ${XDG_CONFIG_HOME:-~/.config}/amp/skills/nowledge-mem/
 #
-# Re-running the script updates an existing installation. Restart Amp after
-# installing or updating so the plugin and skill are picked up.
+# Amp discovers a single-file plugin from a root .ts/.js entry inside the
+# plugins directory; the entry re-exports the bundle's default plugin so a
+# bare bundle directory alone is not loadable. Re-running the script updates
+# an existing installation. Restart Amp after installing or updating so the
+# plugin and skill are picked up.
 
 set -euo pipefail
 
@@ -15,6 +19,7 @@ AMP_CONFIG_DIR="${XDG_CONFIG_HOME:-$HOME/.config}/amp"
 PLUGINS_DIR="$AMP_CONFIG_DIR/plugins"
 SKILLS_DIR="$AMP_CONFIG_DIR/skills"
 PLUGIN_DEST="$PLUGINS_DIR/$PLUGIN_NAME"
+PLUGIN_ENTRY_DEST="$PLUGINS_DIR/$PLUGIN_NAME.ts"
 SKILL_DEST="$SKILLS_DIR/$PLUGIN_NAME"
 
 # Resolve the directory this script lives in, so the command works regardless
@@ -33,50 +38,111 @@ trap cleanup EXIT
 
 STAGED_PLUGIN="$STAGING_DIR/plugin"
 STAGED_SKILL="$STAGING_DIR/skill"
+STAGED_ENTRY="$STAGING_DIR/entry.ts"
 BACKUP_PLUGIN="$STAGING_DIR/old-plugin"
 BACKUP_SKILL="$STAGING_DIR/old-skill"
+BACKUP_ENTRY="$STAGING_DIR/old-entry.ts"
 
+# Track which backups were created so restore_previous only removes/restores
+# artifacts that have a valid backup. A failed backup leaves the live artifact
+# in place (a failed mv keeps its source); the matching flag stays 0, so the
+# live artifact is never deleted without a backup to restore from.
+ENTRY_BACKED_UP=0
+BUNDLE_BACKED_UP=0
+SKILL_BACKED_UP=0
+ENTRY_INSTALLED=0
+BUNDLE_INSTALLED=0
+SKILL_INSTALLED=0
+
+# Restore the previously active entry, bundle, and skill after a failed
+# replacement. Only destinations whose backup succeeded are removed, and only
+# those backups are restored. Fresh artifacts that were installed before a
+# later step failed are removed so failed first installs do not leave partial
+# Amp-visible state behind.
 restore_previous() {
-  rm -rf "$PLUGIN_DEST" "$SKILL_DEST"
-  if [ -e "$BACKUP_PLUGIN" ]; then
+  if [ "$ENTRY_BACKED_UP" -eq 1 ]; then
+    rm -rf "$PLUGIN_ENTRY_DEST"
+    mv "$BACKUP_ENTRY" "$PLUGIN_ENTRY_DEST"
+  elif [ "$ENTRY_INSTALLED" -eq 1 ]; then
+    rm -rf "$PLUGIN_ENTRY_DEST"
+  fi
+  if [ "$BUNDLE_BACKED_UP" -eq 1 ]; then
+    rm -rf "$PLUGIN_DEST"
     mv "$BACKUP_PLUGIN" "$PLUGIN_DEST"
+  elif [ "$BUNDLE_INSTALLED" -eq 1 ]; then
+    rm -rf "$PLUGIN_DEST"
   fi
-  if [ -e "$BACKUP_SKILL" ]; then
+  if [ "$SKILL_BACKED_UP" -eq 1 ]; then
+    rm -rf "$SKILL_DEST"
     mv "$BACKUP_SKILL" "$SKILL_DEST"
+  elif [ "$SKILL_INSTALLED" -eq 1 ]; then
+    rm -rf "$SKILL_DEST"
   fi
 }
 
 install_staged() {
-  if [ -e "$PLUGIN_DEST" ] && ! mv "$PLUGIN_DEST" "$BACKUP_PLUGIN"; then
-    return 1
+  if [ -e "$PLUGIN_ENTRY_DEST" ]; then
+    if mv "$PLUGIN_ENTRY_DEST" "$BACKUP_ENTRY"; then
+      ENTRY_BACKED_UP=1
+    else
+      return 1
+    fi
   fi
-  if [ -d "$STAGED_SKILL" ] && [ -e "$SKILL_DEST" ] && ! mv "$SKILL_DEST" "$BACKUP_SKILL"; then
-    restore_previous
-    return 1
+  if [ -e "$PLUGIN_DEST" ]; then
+    if mv "$PLUGIN_DEST" "$BACKUP_PLUGIN"; then
+      BUNDLE_BACKED_UP=1
+    else
+      restore_previous
+      return 1
+    fi
+  fi
+  if [ -d "$STAGED_SKILL" ] && [ -e "$SKILL_DEST" ]; then
+    if mv "$SKILL_DEST" "$BACKUP_SKILL"; then
+      SKILL_BACKED_UP=1
+    else
+      restore_previous
+      return 1
+    fi
   fi
-  if ! mv "$STAGED_PLUGIN" "$PLUGIN_DEST"; then
+  if mv "$STAGED_PLUGIN" "$PLUGIN_DEST"; then
+    BUNDLE_INSTALLED=1
+  else
     restore_previous
     return 1
   fi
-  if [ -d "$STAGED_SKILL" ] && ! mv "$STAGED_SKILL" "$SKILL_DEST"; then
+  if [ -d "$STAGED_SKILL" ]; then
+    if mv "$STAGED_SKILL" "$SKILL_DEST"; then
+      SKILL_INSTALLED=1
+    else
+      restore_previous
+      return 1
+    fi
+  fi
+  if mv "$STAGED_ENTRY" "$PLUGIN_ENTRY_DEST"; then
+    ENTRY_INSTALLED=1
+  else
     restore_previous
     return 1
   fi
-  rm -rf "$BACKUP_PLUGIN" "$BACKUP_SKILL"
+  rm -rf "$BACKUP_PLUGIN" "$BACKUP_SKILL" "$BACKUP_ENTRY"
 }
 
 echo "Installing Nowledge Mem for Amp"
 echo "  source:  $PLUGIN_SRC"
+echo "  entry:   $PLUGIN_ENTRY_DEST"
 echo "  plugin:  $PLUGIN_DEST"
 echo "  skill:   $SKILL_DEST"
 
-# Stage the plugin and skill before touching the active installation.
+# Stage the plugin, skill, and root entry before touching the active
+# installation. The entry re-exports the bundle's default plugin so Amp
+# discovers it as a single-file plugin (see the header comment).
 cp -R "$PLUGIN_SRC" "$STAGED_PLUGIN"
 if [ -d "$STAGED_PLUGIN/skills/$PLUGIN_NAME" ]; then
   cp -R "$STAGED_PLUGIN/skills/$PLUGIN_NAME" "$STAGED_SKILL"
 fi
+printf 'export { default } from "./nowledge-mem/src/index.ts"\n' > "$STAGED_ENTRY"
 
-# Validate the staged plugin entrypoint exists before replacement.
+# Validate the staged bundle, skill, and entry before replacement.
 if [ ! -f "$STAGED_PLUGIN/src/index.ts" ]; then
   echo "Error: staged plugin is missing src/index.ts" >&2
   exit 1
@@ -85,6 +151,14 @@ if [ ! -f "$STAGED_PLUGIN/skills/$PLUGIN_NAME/SKILL.md" ]; then
   echo "Error: staged plugin is missing skills/$PLUGIN_NAME/SKILL.md" >&2
   exit 1
 fi
+if [ ! -f "$STAGED_ENTRY" ]; then
+  echo "Error: staged root entry was not written" >&2
+  exit 1
+fi
+if ! grep -q 'export { default } from "./nowledge-mem/src/index.ts"' "$STAGED_ENTRY"; then
+  echo "Error: staged root entry does not re-export the bundle default" >&2
+  exit 1
+fi
 
 if ! install_staged; then
   echo "Error: could not replace the active installation; previous files were restored." >&2
diff --git a/tests/plugin_e2e/test_key_plugins_e2e.py b/tests/plugin_e2e/test_key_plugins_e2e.py
index 59aad4a4..84df5476 100644
--- a/tests/plugin_e2e/test_key_plugins_e2e.py
+++ b/tests/plugin_e2e/test_key_plugins_e2e.py
@@ -1626,7 +1626,7 @@ def test_amp_plugin_static_contract_is_self_contained():
 
     # Package manifest and registry entry agree on the basics.
     assert pkg["name"] == "amp-nowledge-mem"
-    assert pkg["version"] == "0.1.0"
+    assert pkg["version"] == "0.1.1"
     assert pkg["type"] == "module"
     assert pkg["main"] == "src/index.ts"
     assert "@ampcode/plugin" in pkg["peerDependencies"]
@@ -1688,6 +1688,15 @@ def test_amp_plugin_static_contract_is_self_contained():
     assert "STAGED_PLUGIN=" in install_sh
     assert "install_staged" in install_sh
     assert 'skills/$PLUGIN_NAME/SKILL.md' in install_sh
+    # The script installs an Amp-discoverable root plugin entry that re-exports
+    # the bundle default, alongside the bundle dir and skill.
+    assert "PLUGIN_ENTRY_DEST=" in install_sh
+    assert "STAGED_ENTRY=" in install_sh
+    assert "BACKUP_ENTRY=" in install_sh
+    assert "ENTRY_INSTALLED=" in install_sh
+    assert "BUNDLE_INSTALLED=" in install_sh
+    assert "SKILL_INSTALLED=" in install_sh
+    assert 'export { default } from "./nowledge-mem/src/index.ts"' in install_sh
 
     # No raw secrets are checked into the package.
     assert "NMEM_API_KEY" in readme
@@ -2677,3 +2686,154 @@ def test_opencode_live_tool_thread_capture(e2e_context: E2EContext, tmp_path: Pa
         space=e2e_context.space,
         env=env,
     )
+
+
+def _run_amp_install(xdg_home: Path, *, script: Path | None = None) -> subprocess.CompletedProcess[str]:
+    """Run the Amp plugin install script isolated under an XDG_CONFIG_HOME root.
+
+    Returns the CompletedProcess regardless of exit code so callers can assert
+    on success or failure. The script resolves its own source dir, so `script`
+    defaults to the in-tree install.sh.
+    """
+    install_script = script if script is not None else AMP_PLUGIN / "scripts" / "install.sh"
+    return subprocess.run(
+        ["bash", str(install_script)],
+        env={**os.environ, "XDG_CONFIG_HOME": str(xdg_home)},
+        text=True,
+        capture_output=True,
+        timeout=60,
+    )
+
+
+def _assert_amp_artifacts(xdg_home: Path) -> None:
+    plugins_dir = xdg_home / "amp" / "plugins"
+    entry = plugins_dir / "nowledge-mem.ts"
+    bundle_index = plugins_dir / "nowledge-mem" / "src" / "index.ts"
+    skill = xdg_home / "amp" / "skills" / "nowledge-mem" / "SKILL.md"
+    assert entry.is_file(), f"root plugin entry missing: {entry}"
+    assert (
+        'export { default } from "./nowledge-mem/src/index.ts"' in entry.read_text(encoding="utf-8")
+    ), "root entry does not re-export the bundle default"
+    # The entry's import target must resolve on disk, otherwise Amp cannot load it.
+    assert bundle_index.is_file(), f"entry target missing: {bundle_index}"
+    assert skill.is_file(), f"skill missing: {skill}"
+
+
+def test_amp_install_script_creates_root_entry_bundle_and_skill(tmp_path: Path):
+    """First install writes the Amp-discoverable root entry, the bundle it
+    re-exports, and the skill, all under the resolved XDG config directory."""
+    result = _run_amp_install(tmp_path)
+    assert result.returncode == 0, result.stderr
+    _assert_amp_artifacts(tmp_path)
+
+
+def test_amp_install_script_is_idempotent(tmp_path: Path):
+    """Re-running the script is a safe atomic update: all artifacts survive and
+    the root entry content is stable across runs."""
+    first = _run_amp_install(tmp_path)
+    assert first.returncode == 0, first.stderr
+    entry = tmp_path / "amp" / "plugins" / "nowledge-mem.ts"
+    bundle_index = tmp_path / "amp" / "plugins" / "nowledge-mem" / "src" / "index.ts"
+    entry_before = entry.read_text(encoding="utf-8")
+    bundle_before = bundle_index.read_text(encoding="utf-8")
+
+    second = _run_amp_install(tmp_path)
+    assert second.returncode == 0, second.stderr
+    _assert_amp_artifacts(tmp_path)
+    assert entry.read_text(encoding="utf-8") == entry_before
+    assert bundle_index.read_text(encoding="utf-8") == bundle_before
+
+
+def test_amp_install_script_keeps_prior_install_when_preflight_fails(tmp_path: Path):
+    """A failed pre-flight check must not disturb a prior valid installation:
+    the script stages everything before touching the active install, so a
+    missing source file fails fast and leaves the live entry/bundle/skill
+    intact."""
+    # Establish a known-good installation first.
+    seed = _run_amp_install(tmp_path)
+    assert seed.returncode == 0, seed.stderr
+    entry = tmp_path / "amp" / "plugins" / "nowledge-mem.ts"
+    bundle_index = tmp_path / "amp" / "plugins" / "nowledge-mem" / "src" / "index.ts"
+    skill = tmp_path / "amp" / "skills" / "nowledge-mem" / "SKILL.md"
+    entry_before = entry.read_text(encoding="utf-8")
+    bundle_before = bundle_index.read_text(encoding="utf-8")
+    skill_before = skill.read_text(encoding="utf-8")
+
+    # Build a broken source tree (missing src/index.ts) and run its install
+    # script against the same config root; the staged-bundle pre-flight check
+    # must abort before the live install is touched.
+    broken_src = tmp_path / "broken-amp-plugin-src"
+    shutil.copytree(AMP_PLUGIN, broken_src)
+    (broken_src / "src" / "index.ts").unlink()
+    failed = _run_amp_install(tmp_path, script=broken_src / "scripts" / "install.sh")
+
+    assert failed.returncode != 0
+    assert "staged plugin is missing src/index.ts" in failed.stderr
+    # The prior installation is untouched.
+    _assert_amp_artifacts(tmp_path)
+    assert entry.read_text(encoding="utf-8") == entry_before
+    assert bundle_index.read_text(encoding="utf-8") == bundle_before
+    assert skill.read_text(encoding="utf-8") == skill_before
+
+
+def test_amp_install_script_preserves_prior_install_when_backup_move_fails(tmp_path: Path):
+    """A failed backup of the live bundle must not delete it. restore_previous
+    only removes/restores artifacts whose backup succeeded, so a failed bundle
+    backup leaves the bundle in place and restores the entry from its successful
+    backup."""
+    seed = _run_amp_install(tmp_path)
+    assert seed.returncode == 0, seed.stderr
+    entry = tmp_path / "amp" / "plugins" / "nowledge-mem.ts"
+    bundle_dir = tmp_path / "amp" / "plugins" / "nowledge-mem"
+    bundle_index = bundle_dir / "src" / "index.ts"
+    skill = tmp_path / "amp" / "skills" / "nowledge-mem" / "SKILL.md"
+    entry_before = entry.read_text(encoding="utf-8")
+    bundle_before = bundle_index.read_text(encoding="utf-8")
+    skill_before = skill.read_text(encoding="utf-8")
+
+    # Inject a deterministic bundle-backup failure after the entry backup has
+    # succeeded. chmod on the bundle dir is not portable here: POSIX rename
+    # checks the parent directory, not the moved directory's own write bit.
+    broken_src = tmp_path / "broken-backup-amp-plugin-src"
+    shutil.copytree(AMP_PLUGIN, broken_src)
+    install_script = broken_src / "scripts" / "install.sh"
+    script = install_script.read_text(encoding="utf-8")
+    script = script.replace(
+        'if mv "$PLUGIN_DEST" "$BACKUP_PLUGIN"; then',
+        'if false && mv "$PLUGIN_DEST" "$BACKUP_PLUGIN"; then',
+        1,
+    )
+    install_script.write_text(script, encoding="utf-8")
+    failed = _run_amp_install(tmp_path, script=install_script)
+
+    assert failed.returncode != 0
+    assert "could not replace the active installation" in failed.stderr
+    # The prior installation is fully intact; the bundle was never deleted.
+    _assert_amp_artifacts(tmp_path)
+    assert entry.read_text(encoding="utf-8") == entry_before
+    assert bundle_index.read_text(encoding="utf-8") == bundle_before
+    assert skill.read_text(encoding="utf-8") == skill_before
+
+
+def test_amp_install_script_removes_fresh_partial_install_when_entry_move_fails(tmp_path: Path):
+    """If a first install fails after moving the bundle and skill but before
+    moving the root entry, rollback removes the new partial install. Amp should
+    not see a half-installed bundle without the discoverable entry."""
+    broken_src = tmp_path / "broken-entry-amp-plugin-src"
+    shutil.copytree(AMP_PLUGIN, broken_src)
+    install_script = broken_src / "scripts" / "install.sh"
+    script = install_script.read_text(encoding="utf-8")
+    script = script.replace(
+        'if mv "$STAGED_ENTRY" "$PLUGIN_ENTRY_DEST"; then',
+        'rm -f "$STAGED_ENTRY"\n  if mv "$STAGED_ENTRY" "$PLUGIN_ENTRY_DEST"; then',
+        1,
+    )
+    install_script.write_text(script, encoding="utf-8")
+
+    failed = _run_amp_install(tmp_path, script=install_script)
+
+    assert failed.returncode != 0
+    assert "could not replace the active installation" in failed.stderr
+    assert not (tmp_path / "amp" / "plugins" / "nowledge-mem.ts").exists()
+    assert not (tmp_path / "amp" / "plugins" / "nowledge-mem").exists()
+    assert not (tmp_path / "amp" / "skills" / "nowledge-mem").exists()