Make .claude/skills a real folder for claude sandbox to work (#1674)

### What does this PR do?

Type of change: ?  Bug fix

replace .claude/skills dir-symlink with real dir + per-skill symlinks

Claude Code hardcodes .claude/skills in its sandbox denyWithinAllow
list. bwrap enforces this by creating a mount point at that path, but
fails with "Can't create file: Is a directory" when the path is a
symlink to a directory — breaking all sandboxed commands, not just
writes.

Fix by making .claude/skills a real directory containing per-skill
symlinks into .agents/skills/. Add a pre-commit hook that automatically
creates and stages a new symlink whenever a skill directory is added to
.agents/skills/, so authors need no extra steps.

### Usage

claude with sandbox

### Testing
tried on local.

### Before your PR is "*Ready for review*"

Make sure you read and follow [Contributor
guidelines](https://github.com/NVIDIA/Model-Optimizer/blob/main/CONTRIBUTING.md)
and your commits are signed (`git commit -s -S`).

Make sure you read and follow the [Security Best
Practices](https://github.com/NVIDIA/Model-Optimizer/blob/main/SECURITY.md#security-coding-practices-for-contributors)
(e.g. avoiding hardcoded `trust_remote_code=True`, `torch.load(...,
weights_only=False)`, `pickle`, etc.).

- Is this change backward compatible?: ✅
- If you copied code from any other sources or added a new PIP
dependency, did you follow guidance in `CONTRIBUTING.md`: ✅
- Did you write any new necessary tests?: N/A 
- Did you update
[Changelog](https://github.com/NVIDIA/Model-Optimizer/blob/main/CHANGELOG.rst)?:
N/A
- Did you get Claude approval on this PR?: ✅ / ❌ / N/A <!--- Run
`/claude review`. NVIDIA org members can self-trigger for complex
changes; orthogonal to CodeRabbit. -->

### Additional Information
<!-- E.g. related issue. -->


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Chores**
* Updated internal development tooling to streamline workflow automation
and improve developer processes.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Signed-off-by: Shiyang Chen <shiychen@nvidia.com>

.claude/skills

@@ -1 +0,0 @@
-../.agents/skills

.claude/skills/accessing-mlflow

@@ -0,0 +1 @@
+../../.agents/skills/accessing-mlflow

.claude/skills/common

@@ -0,0 +1 @@
+../../.agents/skills/common

.claude/skills/compare-results

@@ -0,0 +1 @@
+../../.agents/skills/compare-results

.claude/skills/day0-release

@@ -0,0 +1 @@
+../../.agents/skills/day0-release

.claude/skills/debug

@@ -0,0 +1 @@
+../../.agents/skills/debug

.claude/skills/deployment

@@ -0,0 +1 @@
+../../.agents/skills/deployment

.claude/skills/eagle3-new-model

@@ -0,0 +1 @@
+../../.agents/skills/eagle3-new-model

.claude/skills/eagle3-review-logs

@@ -0,0 +1 @@
+../../.agents/skills/eagle3-review-logs

.claude/skills/eagle3-triage

@@ -0,0 +1 @@
+../../.agents/skills/eagle3-triage

.claude/skills/eagle3-validate

@@ -0,0 +1 @@
+../../.agents/skills/eagle3-validate

.claude/skills/evaluation

@@ -0,0 +1 @@
+../../.agents/skills/evaluation

.claude/skills/launching-evals

@@ -0,0 +1 @@
+../../.agents/skills/launching-evals

.claude/skills/monitor

@@ -0,0 +1 @@
+../../.agents/skills/monitor

.claude/skills/ptq

@@ -0,0 +1 @@
+../../.agents/skills/ptq

.claude/skills/quant-recipe-search

@@ -0,0 +1 @@
+../../.agents/skills/quant-recipe-search

.claude/skills/release-cherry-pick

@@ -0,0 +1 @@
+../../.agents/skills/release-cherry-pick

.pre-commit-config.yaml

@@ -71,6 +71,13 @@ repos:
         # configs/ contains reusable snippets (not full recipes) — skip recipe validation
         exclude: ^modelopt_recipes/configs/
 
+      - id: sync-claude-skills
+        name: sync .claude/skills/ symlinks from .agents/skills/
+        entry: bash tools/precommit/sync_claude_skills.sh
+        language: system
+        files: ^\.agents/skills/
+        pass_filenames: false
+
   # Instructions to change license file if ever needed:
   # https://github.com/Lucas-C/pre-commit-hooks#removing-old-license-and-replacing-it-with-a-new-one
   - repo: https://github.com/Lucas-C/pre-commit-hooks

tools/precommit/sync_claude_skills.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+set -euo pipefail
+repo_root=$(git rev-parse --show-toplevel)
+skills_src="$repo_root/.agents/skills"
+skills_dst="$repo_root/.claude/skills"
+
+added=()
+for d in "$skills_src"/*/; do
+  [ -d "$d" ] || continue
+  name=$(basename "$d")
+  link="$skills_dst/$name"
+  if [ ! -e "$link" ] && [ ! -L "$link" ]; then
+    ln -s "../../.agents/skills/$name" "$link"
+    added+=("$link")
+  fi
+done
+
+if [ "${#added[@]}" -gt 0 ]; then
+  git add "${added[@]}"
+  echo "claude-skills-sync: staged ${#added[@]} new symlink(s) in .claude/skills/"
+fi