fix(bicep): support multi-line array completion for roles and other enums

Adds support for autocomplete in multi-line array syntax like:

    roles: [
      'KEY_VAULT_  ← cursor triggers completion here
    ]

Previously only worked on same line as opening bracket:
    roles: ['KEY_VAULT_  ← only this worked

Changes:
- Walk backwards up to 10 lines to find array opening (e.g. "roles: [")
- Detect if cursor is inside array based on indentation and quotes
- Stop lookback if closing bracket found (not in array anymore)
- Add test case for nested multi-line array completion
- Improve lsp_bridge.py error handling with traceback logging
- Add lsp_bridge_debug.sh wrapper for easier IntelliJ debugging
- Update EDITOR_SETUP.md with correct IntelliJ LSP4IJ config

Fixes autocomplete for deeply nested structures like:
    assignments: [{ roles: ['APP_CONFIGURATION_...'] }]

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

EDITOR_SETUP.md

@@ -14,21 +14,49 @@ supports LSP WebSocket transport.
 
 ## IntelliJ IDEA setup (LSP4IJ)
 
-Install the [LSP4IJ](https://plugins.jetbrains.com/plugin/23257-lsp4ij) plugin, then:
+Install the [LSP4IJ](https://plugins.jetbrains.com/plugin/23257-lsp4ij) plugin, then add language servers:
+
+### Bicep
 
 1. **Settings → Languages & Frameworks → LSP → Language Servers → +**
    - Name: `iLSP Bicep`
    - Server type: `Command` (not WebSocket — see note below)
-   - Command: `python3`
-   - Arguments: `/Users/lrihni/Projects/iLSP/scripts/lsp_bridge.py wss://ilsp.i80.dk/bicep`
+   - Command: `/Users/lrihni/Projects/iLSP/scripts/lsp_bridge_debug.sh wss://ilsp.i80.dk/bicep`
+   - Arguments: (leave blank)
+   - File pattern: `*.bicep;*.bicepparam`
+
+### YAML (Azure DevOps + GitHub Actions)
+
+2. **Settings → Languages & Frameworks → LSP → Language Servers → +**
+   - Name: `iLSP YAML`
+   - Server type: `Command`
+   - Command: `/Users/lrihni/Projects/iLSP/scripts/lsp_bridge_debug.sh wss://ilsp.i80.dk/yaml`
+   - Arguments: (leave blank)
+   - File pattern: `*.yaml;*.yml;azure-pipelines.yml`
+
+### Python (optional)
+
+3. **Settings → Languages & Frameworks → LSP → Language Servers → +**
+   - Name: `iLSP Python`
+   - Server type: `Command`
+   - Command: `/Users/lrihni/Projects/iLSP/scripts/lsp_bridge_debug.sh wss://ilsp.i80.dk/python`
+   - Arguments: (leave blank)
+   - File pattern: `*.py`
 
    > **Note**: LSP4IJ's WebSocket mode doesn't handle LSP Content-Length framing correctly,
-   > causing "starting..." to hang or "Stream closed" errors. Use `lsp_bridge.py` instead.
+   > causing "starting..." to hang or "Stream closed" errors. Use `lsp_bridge_debug.sh` wrapper
+   > which calls `lsp_bridge.py` and logs errors to `/tmp/lsp_bridge_debug.log` for debugging.
 
-2. **Add a file-type mapping** under the new server entry:
-   - File pattern: `*.bicep;*.bicepparam` (include both Bicep file types)
+### Troubleshooting
 
-3. **Disable Azure Toolkit Bicep completions** — this is critical if you have the
+If the language server doesn't start, check the debug log:
+```bash
+tail -f /tmp/lsp_bridge_debug.log
+```
+
+### Disable conflicting plugins
+
+**Disable Azure Toolkit Bicep completions** — this is critical if you have the
    Azure Toolkit plugin installed. Without this step, IDEA merges completions from
    both LSP4IJ and Azure Toolkit, resulting in noisy suggestions (`resource`,
    `projectName`, Bicep schema types, etc.) appearing alongside iLSP results.