Correct the last false claims the accuracy audit found

**Ed25519 is not quantum-resistant.** `ssh_setup.rst` said so twice. It is an
elliptic-curve signature scheme, which is exactly what Shor's algorithm breaks
and the whole reason post-quantum migration exists. Described accurately now.

**"15-30 minute manual process into a 15-second automated experience"** appears
in the README, ssh_setup.rst and the SSH tutorial notebook, with no measurement
behind either number. Replaced with what the feature actually does: generate,
deploy and configure a key in one call instead of three manual steps.

**The documented `cluster_find` -> `cluster_stat` chain does not work.** `find`
and `glob` return paths relative to *the directory they searched*, so passing a
result straight to `stat` raises `FileNotFoundError` unless you searched ".".
Eight documentation sites taught the broken form. The contract is now stated
prominently with a working example, verified:

    stat data/a.csv -> 1 bytes

The return contract itself is deliberate and eight tests depend on it, so it is
documented rather than changed this late in the branch.

**Suite figures updated** to the current run: 159 failed / 1402 passed /
36 errors, against 211 / 1194 / 72 at the start of the branch. The previous
figure was ten commits stale.

The PR body is updated too: it still listed #121, the Kubernetes widget fields,
widget input validation and PBS/SGE as broken, all of which this branch fixed,
and quoted three test counts that had grown since (250 -> 255, 72 -> 75,
19 -> 35).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012gTBDPK16HUZ3kHQ2QyjuU

Author: jeremymanning

README.md

@@ -187,7 +187,9 @@ Two timeouts are worth knowing about:
 
 ## SSH Key Automation
 
-Clustrix provides automated SSH key setup to eliminate the manual process of generating and deploying SSH keys to clusters. This feature transforms a 15-30 minute manual setup into a **15-second automated process**.
+Clustrix provides automated SSH key setup: it generates a key, deploys it to
+the cluster and writes the `~/.ssh/config` entry in one call, instead of doing
+those three steps by hand.
 
 ### Quick Setup Methods
 

docs/source/notebooks/ssh_tutorial.ipynb

@@ -20,7 +20,7 @@
     "\n",
     "## ✨ **New: Automated SSH Key Setup**\n",
     "\n",
-    "Clustrix now includes **15-second automated SSH key setup** that eliminates manual configuration! No more spending 15-30 minutes on SSH setup.\n",
+    "Clustrix includes **automated SSH key setup**: generate, deploy and configure a key in one call.\n",
     "\n",
     "## 📋 Prerequisites\n",
     "\n",
@@ -94,7 +94,7 @@
    "outputs": [],
    "source": [
     "# 🚀 AUTOMATED SSH KEY SETUP\n",
-    "# This replaces 15-30 minutes of manual work with 15 seconds of automation!\n",
+    "# One call replaces generating, deploying and configuring the key by hand.\n",
     "\n",
     "print(\"🔄 Setting up SSH keys automatically...\")\n",
     "print(\"💡 You'll be prompted for your password (this is normal and secure).\")\n",
@@ -873,7 +873,7 @@
     "\n",
     "### 🎉 What You've Learned\n",
     "\n",
-    "1. **🔑 Automated SSH Setup**: 15-second setup vs 15-30 minute manual process\n",
+    "1. **🔑 Automated SSH Setup**: generate, deploy and configure a key in one call\n",
     "2. **⚙️ Remote Configuration**: Easy Clustrix setup for SSH execution\n",
     "3. **🧮 Remote Computing**: Mathematical computations on remote servers\n",
     "4. **📊 Data Processing**: NumPy operations and analysis remotely\n",
@@ -941,7 +941,7 @@
     "\n",
     "You've successfully learned how to use Clustrix's automated SSH setup and remote execution capabilities. You can now:\n",
     "\n",
-    "- ⚡ Set up SSH access in 15 seconds instead of 15-30 minutes\n",
+    "- ⚡ Set up SSH access in one call instead of three manual steps\n",
     "- 🚀 Execute Python functions on any SSH-accessible server\n",
     "- 📊 Perform complex computations remotely\n",
     "- 🔧 Troubleshoot and optimize your setup\n",

docs/source/ssh_setup.rst

@@ -1,7 +1,9 @@
 SSH Key Setup for Remote Clusters
 ====================================
 
-Clustrix provides **automated SSH key setup** that transforms the traditional 15-30 minute manual process into a **15-second automated experience**. This feature eliminates the complexity of SSH configuration while maintaining security best practices.
+Clustrix provides **automated SSH key setup**: it generates a key, deploys
+it to the cluster and writes the ``~/.ssh/config`` entry in one call, instead
+of doing those three steps by hand.
 
 .. note::
    **🚀 New in Clustrix**: Automated SSH key setup makes cluster access effortless! 
@@ -68,7 +70,8 @@ What the Automation Does
 The automated SSH setup handles everything for you:
 
 🔑 **Key Generation**
-  - Creates Ed25519 keys (quantum-resistant, modern encryption)
+  - Creates Ed25519 keys (modern elliptic-curve signatures; fast,
+    compact, and widely supported)
   - Proper file permissions (600 for private, 644 for public)
   - Informative comments with timestamps
 
@@ -353,7 +356,8 @@ Security Best Practices
 Key Management
 ~~~~~~~~~~~~~~
 
-1. **Use Ed25519 Keys**: Default in automated setup, quantum-resistant
+1. **Use Ed25519 Keys**: Default in automated setup; modern
+   elliptic-curve signatures, preferred over RSA
 2. **Regular Rotation**: Use ``force_refresh=True`` periodically  
 3. **Unique Keys**: Different keys for different clusters
 4. **Secure Storage**: Keys stored with proper permissions automatically
@@ -390,4 +394,5 @@ Getting Help
 - **SSH Key Automation**: `Issue #57 <https://github.com/ContextLab/clustrix/issues/57>`_
 
 .. note::
-   **Remember**: 15 seconds of automation beats 15-30 minutes of manual setup! 🚀
+   **Remember**: one call replaces generating, deploying and configuring a
+   key by hand.

docs/source/tutorials/filesystem_tutorial.rst

@@ -49,6 +49,20 @@ Clustrix provides nine core filesystem operations:
 
 1. **cluster_ls()** - List directory contents
 2. **cluster_find()** - Find files by pattern (recursive)
+
+.. important::
+
+   ``cluster_find()`` and ``cluster_glob()`` return paths **relative to the
+   directory they searched**, not to the working directory. Passing a result
+   straight to ``cluster_stat()`` therefore raises ``FileNotFoundError``
+   unless you searched ``"."``. Join the search directory back on first::
+
+       import os
+
+       search_dir = "data/"
+       for name in cluster_find("*.csv", search_dir, config):
+           info = cluster_stat(os.path.join(search_dir, name), config)
+
 3. **cluster_stat()** - Get file information (size, modified time, permissions)
 4. **cluster_exists()** - Check if file/directory exists
 5. **cluster_isdir()** - Check if path is a directory

notes/RELEASE_NOTES_v0.2.0.md

@@ -267,8 +267,8 @@ wrong.
   have worked, which is a different claim from "tested".
 * **Kubernetes execution is unverified**, though it is now configurable and
   its memory quantities are valid.
-* **The suite still has failures** outside the paths exercised here: 176
-  failed / 1313 passed / 36 errors, against 211 / 1194 / 72 at the start of
+* **The suite still has failures** outside the paths exercised here: 159
+  failed / 1402 passed / 36 errors, against 211 / 1194 / 72 at the start of
   this branch. Re-baselining it properly is #114.
 * **The result-signing scheme does not defend against a compromised remote
   host.** Nothing that runs your code for you can.