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.

ilsp/bicep_lsp/proxy.py

@@ -154,6 +154,31 @@ class _ProxySession:
                             "has_open_quote": bool(array_m.group(2)),
                         }
 
+                    # Check if cursor is inside a multi-line array element
+                    # e.g. "          'APP_CONFIG" on line after "roles: ["
+                    # Walk backwards to find the array opening
+                    for lookback_idx in range(line_idx - 1, max(0, line_idx - 10), -1):
+                        prev_line = lines[lookback_idx]
+                        # Found array opening like "roles: [" or "    roles: ["
+                        array_open_m = re.match(r"^\s*(\w+):\s*\[$", prev_line.rstrip())
+                        if array_open_m:
+                            param_name = array_open_m.group(1)
+                            if param_name not in {"params", "name", "module", "resource"}:
+                                # Check if current line is inside the array (has quote or is indented)
+                                if re.match(r"^\s+('?)([^',\]]*)\s*$", current):
+                                    has_quote = bool(re.match(r"^\s+'", current))
+                                    return {
+                                        "type": "param_value",
+                                        "module": mod_name,
+                                        "version": mod_ver,
+                                        "param": param_name,
+                                        "has_open_quote": has_quote,
+                                    }
+                            break
+                        # Stop if we hit a closing bracket (we're outside the array)
+                        if "]" in prev_line:
+                            break
+
                     return {
                         "type": "param",
                         "module": mod_name,

scripts/lsp_bridge.py

@@ -17,6 +17,7 @@ frames straight to stdout.
 import asyncio
 import ssl
 import sys
+import traceback
 
 import websockets
 
@@ -71,8 +72,9 @@ async def main(uri: str) -> None:
                     if msg is None:
                         break
                     await ws.send(msg)
-            except Exception:
-                pass
+            except Exception as e:
+                print(f"stdin_to_ws error: {e}", file=sys.stderr)
+                traceback.print_exc(file=sys.stderr)
 
         async def ws_to_stdout() -> None:
             try:
@@ -80,8 +82,9 @@ async def main(uri: str) -> None:
                     data = frame if isinstance(frame, bytes) else frame.encode()
                     sys.stdout.buffer.write(data)
                     sys.stdout.buffer.flush()
-            except Exception:
-                pass
+            except Exception as e:
+                print(f"ws_to_stdout error: {e}", file=sys.stderr)
+                traceback.print_exc(file=sys.stderr)
 
         await asyncio.gather(stdin_to_ws(), ws_to_stdout())
 
@@ -90,4 +93,9 @@ if __name__ == "__main__":
     if len(sys.argv) < 2:
         print("Usage: lsp_bridge.py <wss://...>", file=sys.stderr)
         sys.exit(1)
-    asyncio.run(main(sys.argv[1]))
+    try:
+        asyncio.run(main(sys.argv[1]))
+    except Exception as e:
+        print(f"Fatal error: {e}", file=sys.stderr)
+        traceback.print_exc(file=sys.stderr)
+        sys.exit(1)

scripts/lsp_bridge_debug.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Wrapper for lsp_bridge.py that logs to a file for debugging IntelliJ issues
+
+LOG_FILE="/tmp/lsp_bridge_debug.log"
+
+echo "=== LSP Bridge started at $(date) ===" >> "$LOG_FILE"
+echo "Args: $@" >> "$LOG_FILE"
+echo "PWD: $(pwd)" >> "$LOG_FILE"
+echo "Python: $(which python3)" >> "$LOG_FILE"
+echo "" >> "$LOG_FILE"
+
+exec /opt/homebrew/bin/python3 /Users/lrihni/Projects/iLSP/scripts/lsp_bridge.py "$@" 2>> "$LOG_FILE"

tests/test_proxy.py

@@ -329,6 +329,30 @@ def test_detect_param_value_context_in_array():
     assert ctx["has_open_quote"] is True
 
 
+def test_detect_param_value_context_in_multiline_array():
+    """Cursor in multi-line array element → param_value context."""
+    lines = [
+        "module myMod 'br/modules:roleassignments:2.0.x' = {",
+        "  params: {",
+        "    assignments: [",
+        "      {",
+        "        roles: [",
+        "          'APP_CONFIGURATION_",  # ← cursor on separate line
+        "        ]",
+        "      }",
+        "    ]",
+        "  }",
+        "}",
+    ]
+    session = _make_session_with_doc(URI, lines)
+    # character = len("          'APP_CONFIGURATION_") = 27
+    ctx = session._detect_context(URI, {"line": 5, "character": 27})
+    assert ctx["type"] == "param_value"
+    assert ctx["module"] == "roleassignments"
+    assert ctx["param"] == "roles"
+    assert ctx["has_open_quote"] is True
+
+
 def test_param_value_items_from_catalog_allowed():
     """environmentType completions come from catalog 'allowed' field."""
     BicepModuleCatalog._modules = [_make_module(