Update Development Tools & Documentation

.clang-format

@@ -1,3 +1,78 @@
+# QGroundControl C++ Code Formatting
+# Based on Google style with QGC customizations
+# Matches CodingStyle.cc/h patterns
+
 BasedOnStyle: Google
+Language: Cpp
+
+# Line length and indentation
 ColumnLimit: 120
 IndentWidth: 4
+TabWidth: 4
+UseTab: Never
+ContinuationIndentWidth: 4
+
+# Bracing - Allman style (opening brace on new line)
+BreakBeforeBraces: Allman
+AllowShortFunctionsOnASingleLine: None
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLoopsOnASingleLine: false
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+
+# Pointer and reference alignment
+PointerAlignment: Left
+ReferenceAlignment: Left
+DerivePointerAlignment: false
+
+# Spacing
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesInAngles: Never
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+
+# Include sorting
+SortIncludes: CaseSensitive
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex: '^<Q.*>'  # Qt headers
+    Priority: 1
+  - Regex: '^<.*>'   # System/STL headers
+    Priority: 2
+  - Regex: '.*'      # Project headers
+    Priority: 3
+
+# Alignment
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: None
+AlignConsecutiveDeclarations: None
+AlignOperands: Align
+AlignTrailingComments:
+  Kind: Always
+  OverEmptyLines: 1
+
+# Line breaks
+AlwaysBreakAfterReturnType: None
+AlwaysBreakTemplateDeclarations: Yes
+BreakBeforeBinaryOperators: None
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakInheritanceList: BeforeColon
+ConstructorInitializerIndentWidth: 4
+
+# Namespace formatting
+CompactNamespaces: false
+NamespaceIndentation: None
+
+# Other formatting
+BinPackArguments: true
+BinPackParameters: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+ReflowComments: true
+Standard: c++20

.clang-tidy

@@ -1,5 +1,66 @@
+# QGroundControl C++ Static Analysis
+# Clang-Tidy configuration for C++20 and Qt 6
+
 ---
 Checks: >
-    clang-analyzer-*,
-WarningsAsErrors: '*'
+  -*,
+  bugprone-*,
+  -bugprone-easily-swappable-parameters,
+  -bugprone-exception-escape,
+  clang-analyzer-*,
+  -clang-analyzer-cplusplus.NewDeleteLeaks,
+  modernize-*,
+  -modernize-use-trailing-return-type,
+  -modernize-avoid-c-arrays,
+  performance-*,
+  readability-*,
+  -readability-magic-numbers,
+  -readability-identifier-length,
+  -readability-function-cognitive-complexity,
+  cppcoreguidelines-*,
+  -cppcoreguidelines-avoid-magic-numbers,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+  -cppcoreguidelines-pro-type-vararg,
+  -cppcoreguidelines-avoid-const-or-ref-data-members,
+
+WarningsAsErrors: ''  # Don't treat warnings as errors by default
+
+CheckOptions:
+  # Naming conventions (match QGC style)
+  - key: readability-identifier-naming.ClassCase
+    value: CamelCase
+  - key: readability-identifier-naming.StructCase
+    value: CamelCase
+  - key: readability-identifier-naming.EnumCase
+    value: CamelCase
+  - key: readability-identifier-naming.FunctionCase
+    value: camelBack
+  - key: readability-identifier-naming.VariableCase
+    value: camelBack
+  - key: readability-identifier-naming.PrivateMemberPrefix
+    value: '_'
+  - key: readability-identifier-naming.ProtectedMemberPrefix
+    value: '_'
+  - key: readability-identifier-naming.ConstexprVariableCase
+    value: CamelCase
+
+  # Modernization options
+  - key: modernize-use-nullptr.NullMacros
+    value: 'NULL'
+  - key: modernize-loop-convert.MinConfidence
+    value: 'reasonable'
+
+  # Performance options
+  - key: performance-for-range-copy.WarnOnAllAutoCopies
+    value: 'true'
+  - key: performance-move-const-arg.CheckTriviallyCopyableMove
+    value: 'true'
+
+  # Readability options
+  - key: readability-braces-around-statements.ShortStatementLines
+    value: '0'  # Always require braces
+
+HeaderFilterRegex: '.*'
+FormatStyle: file
 ...

.clangd

@@ -1,3 +1,32 @@
+# QGroundControl Clangd Configuration
+# Language server for C++ code completion and navigation
+
+CompileFlags:
+  Add:
+    - "-std=c++20"
+    - "-Wall"
+    - "-Wextra"
+  Remove:
+    - "-m*"  # Remove machine-specific flags
+
 Diagnostics:
+  # Qt macros and moc generate code that triggers false positives
   UnusedIncludes: None
   MissingIncludes: None
+  # Suppress common Qt-related warnings
+  Suppress:
+    - "unknown_typename"
+    - "expansion_to_defined"
+
+Index:
+  Background: Build
+  StandardLibrary: Yes
+
+InlayHints:
+  Enabled: Yes
+  ParameterNames: Yes
+  DeducedTypes: Yes
+  Designators: Yes
+
+Hover:
+  ShowAKA: Yes

.cmake-format

@@ -1,11 +1,23 @@
+# QGroundControl CMake Formatting Configuration
+# Used by cmake-format for consistent CMake file formatting
+# Install: pip install cmake-format
+
 format:
-    line_width: 120
-    tab_size: 4
-    max_prefix_chars: 40
-    use_tabchars: false
+  line_width: 120
+  tab_size: 4
+  max_prefix_chars: 40
+  use_tabchars: false
+  dangle_parens: true
+  dangle_align: prefix
+  max_subgroups_hwrap: 2
+  max_pargs_hwrap: 6
+  separate_ctrl_name_with_space: false
+  separate_fn_name_with_space: false
+  command_case: canonical
 
 parse:
   additional_commands:
+    # CPM Package Manager commands
     cpmaddpackage:
       pargs:
         nargs: '*'
@@ -41,3 +53,40 @@ parse:
         flags: []
       spelling: CPMFindPackage
       kwargs: *cpmaddpackagekwargs
+
+    # Qt macros
+    qt_add_qml_module:
+      pargs:
+        nargs: '1+'
+      kwargs:
+        URI: 1
+        VERSION: 1
+        QML_FILES: +
+        SOURCES: +
+        RESOURCES: +
+        OUTPUT_DIRECTORY: 1
+        RESOURCE_PREFIX: 1
+
+    qt_add_resources:
+      pargs:
+        nargs: '2+'
+      kwargs:
+        PREFIX: 1
+        FILES: +
+
+markup:
+  enable_markup: false
+
+lint:
+  disabled_codes: []
+  function_pattern: '[0-9a-z_]+'
+  macro_pattern: '[0-9A-Z_]+'
+  global_var_pattern: '[A-Z][0-9A-Z_]+'
+  internal_var_pattern: '_[A-Z][0-9A-Z_]+'
+  local_var_pattern: '[a-z][a-z0-9_]+'
+  private_var_pattern: '_[0-9a-z_]+'
+  public_var_pattern: '[A-Z][0-9A-Z_]+'
+  keyword_pattern: '[A-Z][0-9A-Z_]+'
+  max_conditionals_custom_parser: 2
+  min_statement_spacing: 1
+  max_statement_spacing: 2

.editorconfig

@@ -1,8 +1,64 @@
+# QGroundControl EditorConfig
+# https://editorconfig.org/
+
 root = true
 
+# Default settings for all files
 [*]
 charset = utf-8
 insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf
+
+# C++ source files
+[*.{cc,h,cpp,hpp,cxx}]
+indent_style = space
+indent_size = 4
+max_line_length = 120
+
+# CMake files
+[{CMakeLists.txt,*.cmake}]
+indent_style = space
+indent_size = 4
+
+# QML and JavaScript
+[*.{qml,js}]
+indent_style = space
+indent_size = 4
+
+# JSON files
+[*.json]
+indent_style = space
+indent_size = 2
+
+# YAML files
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# Markdown files
+[*.md]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = false  # Preserve trailing spaces for line breaks
+
+# XML files (including Qt resource files)
+[*.{xml,qrc,ui}]
+indent_style = space
+indent_size = 2
+
+# Shell scripts
+[*.sh]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+
+# Python scripts
+[*.py]
 indent_style = space
 indent_size = 4
-trim_trailing_whitespace=true
+max_line_length = 100
+
+# Makefiles (require tabs)
+[{Makefile,*.mk}]
+indent_style = tab

.github/CODEOWNERS

@@ -0,0 +1,34 @@
+# Code Owners for QGroundControl
+# These owners will be automatically requested for review when someone opens a pull request.
+#
+# More info: https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
+
+# Default owners for everything in the repo
+# * @mavlink/qgroundcontrol-maintainers
+
+# GitHub Actions and CI/CD workflows
+# /.github/workflows/ @mavlink/qgroundcontrol-maintainers
+# /.github/actions/ @mavlink/qgroundcontrol-maintainers
+# .github/dependabot.yml @mavlink/qgroundcontrol-maintainers
+
+# Build system
+# /cmake/ @mavlink/qgroundcontrol-maintainers
+# CMakeLists.txt @mavlink/qgroundcontrol-maintainers
+# /custom/ @mavlink/qgroundcontrol-maintainers
+
+# Core architecture - requires careful review
+# /src/FactSystem/ @mavlink/qgroundcontrol-maintainers
+# /src/Vehicle/ @mavlink/qgroundcontrol-maintainers
+# /src/FirmwarePlugin/ @mavlink/qgroundcontrol-maintainers
+# /src/AutoPilotPlugins/ @mavlink/qgroundcontrol-maintainers
+
+# MAVLink protocol handling
+# /src/MAVLink/ @mavlink/qgroundcontrol-maintainers
+# /src/Comms/ @mavlink/qgroundcontrol-maintainers
+
+# Documentation
+# /docs/ @mavlink/qgroundcontrol-maintainers
+# *.md @mavlink/qgroundcontrol-maintainers
+
+# Security-sensitive files
+# .github/SECURITY.md @mavlink/qgroundcontrol-maintainers