fix: quote CLAUDE_PLUGIN_ROOT in hook commands to support paths with spaces

[Sagargupta16]

Problem

The `aws-serverless` and `deploy-on-aws` PostToolUse hooks pass `${CLAUDE_PLUGIN_ROOT}` directly to `/bin/sh -c` with no quoting and no explicit interpreter. When `CLAUDE_CONFIG_DIR` (and therefore `CLAUDE_PLUGIN_ROOT`) contains a space -- e.g. `/Users/me/Work/Company Name/.claude` or `C:\Users\First Last.claude\plugins...` -- the shell word-splits the expanded path and the hook fails on every `Edit`/`Write`:

```
PostToolUse:Edit hook error
Failed with non-blocking status code: /bin/sh: /Users/me/Work/Company: is a directory
```

Fix

Wrap the interpolated path in escaped double quotes and prefix with `bash`, matching the pattern used by `superpowers` in `anthropics/claude-plugins-official`:

```diff

• "command": "${CLAUDE_PLUGIN_ROOT}/scripts/validate-template.sh",

• "command": "bash \"${CLAUDE_PLUGIN_ROOT}/scripts/validate-template.sh\"",
  ```

Files touched

• `plugins/aws-serverless/hooks/hooks.json` -- primary bug from the issue
• `plugins/deploy-on-aws/hooks/hooks.json` -- same pattern, same failure mode; fixed for parity
• `plugins/databases-on-aws/scripts/README.md` -- doc example that would have taught the broken form; updated so copy-pasters don't hit the same bug

Space-free paths are unaffected (double quotes and `bash` are no-ops on well-formed paths).

Testing

• Verified all three JSON files parse (`python -c 'import json; json.load(...)'`).
• Manually confirmed the fixed hook works on a fake plugin under a path with a literal space (`/tmp/dir with space/scripts/x.sh` -- resolves without shell error).

Closes #146

---

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[Copilot]

Pull request overview

This PR fixes PostToolUse hook command strings to work when CLAUDE_PLUGIN_ROOT contains spaces (e.g., paths under .../Company Name/...) by invoking scripts via bash and quoting the interpolated script path (and, in docs, quoting example arguments too). This aligns hook behavior across aws-serverless and deploy-on-aws and prevents shell word-splitting failures.

Changes:

• Quote ${CLAUDE_PLUGIN_ROOT} in hook command strings and prefix with bash for reliable execution.
• Apply the same fix to both aws-serverless and deploy-on-aws hook configs for parity.
• Update the databases-on-aws scripts README hook example to use the safe quoted form (including quoting $CLUSTER and $REGION).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
plugins/aws-serverless/hooks/hooks.json	Quotes ${CLAUDE_PLUGIN_ROOT} and runs validation script via bash to prevent failures on space-containing paths.
plugins/deploy-on-aws/hooks/hooks.json	Applies the same bash + quoted ${CLAUDE_PLUGIN_ROOT} pattern to the drawio validation hook.
plugins/databases-on-aws/scripts/README.md	Updates the documented hook example to use quoted script path and arguments, avoiding copy/paste breakage.

[scottschreckengaust]

LGTM