feat: finalize no_std migration with enhanced safety and documentation standards

Complete the final phase of no_std migration with comprehensive safety enhancements:

Platform Layer:
- Enhanced panic handler with clearer safety-critical behavior documentation
- Improved conditional compilation for panic handler management
- Better feature flag organization for no_std/std builds

Host Integration:
- Complete bounded host integration implementation with ASIL safety levels
- Add comprehensive host function call context with memory tracking
- Implement call depth limits and parameter size validation
- Add execution time monitoring and resource usage statistics
- Enhanced bounded call results with proper error handling

Runtime Layer:
- Finalize table operations with proper bounds checking integration
- Add comprehensive table safety statistics and verification levels
- Implement table manager for multi-table operations with bounded collections
- Enhanced table fill and copy operations with memory safety

Debug Infrastructure:
- Add platform-specific debug capabilities
- Implement streaming validator for real-time validation

Logging System:
- Complete bounded logging implementation with no_std compatibility
- Add structured logging with memory constraints

Documentation:
- Add comprehensive documentation standards for consistency
- Enhanced API documentation with safety considerations
- Improved code examples and usage patterns

This commit completes the no_std migration initiative and establishes
a solid foundation for safety-critical WebAssembly runtime operations.

Author: avrabe

docs/DOCUMENTATION_STANDARDS.md

@@ -0,0 +1,298 @@
+# WRT Documentation Standards
+
+This document defines the documentation standards for the WebAssembly Runtime (WRT) project to ensure consistency, safety compliance, and maintainability across all modules.
+
+## Module Documentation Template
+
+All modules should follow this comprehensive documentation template:
+
+```rust
+// WRT - {crate-name}
+// Module: {Module Description}
+// SW-REQ-ID: {requirement-ids}
+//
+// Copyright (c) 2025 Ralf Anton Beier
+// Licensed under the MIT license.
+// SPDX-License-Identifier: MIT
+
+//! {Module Name} for {Purpose}
+//!
+//! {Brief description of what this module provides}
+//!
+//! ⚠️ **{SAFETY/SECURITY WARNINGS IF APPLICABLE}** ⚠️
+//!
+//! {Detailed description including safety implications}
+//!
+//! # Architecture
+//!
+//! {System design, hierarchy, and component relationships}
+//!
+//! # Design Principles
+//!
+//! - **{Principle 1}**: {Description}
+//! - **{Principle 2}**: {Description}
+//! - **{Principle 3}**: {Description}
+//!
+//! # Safety Considerations
+//!
+//! {For safety-critical modules, detailed safety implications and requirements}
+//!
+//! # Usage
+//!
+//! ```rust
+//! {Comprehensive example showing typical usage patterns}
+//! ```
+//!
+//! # Cross-References
+//!
+//! - [`related_module`]: {Relationship description}
+//! - [`another_module`]: {How they interact}
+//!
+//! # REQ Traceability
+//!
+//! - REQ_{ID}: {How this module satisfies the requirement}
+//! - REQ_{ID}: {Another requirement satisfaction}
+```
+
+## Function Documentation Template
+
+All public functions should follow this documentation pattern:
+
+```rust
+/// {Brief description of what the function does}
+///
+/// {Detailed description including safety implications and behavior}
+///
+/// # Arguments
+///
+/// * `param1` - {Description with safety notes if applicable}
+/// * `param2` - {Description with constraints and validation requirements}
+///
+/// # Returns
+///
+/// {Description of return value, including success and error conditions}
+///
+/// # Errors
+///
+/// - [`ErrorCategory::Category`] if {specific condition}
+/// - [`ErrorCategory::Another`] if {another condition}
+///
+/// # Safety
+///
+/// {Safety requirements and rationale - MANDATORY for safety-critical functions}
+/// 
+/// {Conservative behavior explanations for safety functions}
+///
+/// # Examples
+///
+/// ```rust
+/// {Basic usage example}
+/// ```
+///
+/// ```rust
+/// {Advanced or safety-critical usage example if applicable}
+/// ```
+///
+/// # REQ Traceability
+///
+/// - REQ_{ID}: {How this function satisfies specific requirements}
+fn example_function(param1: Type1, param2: Type2) -> Result<ReturnType> {
+    // Implementation
+}
+```
+
+## Documentation Categories
+
+### Safety-Critical Modules
+
+Modules dealing with safety (safety_system, memory_system, resource management) **MUST** include:
+
+1. **Safety Warnings**: Prominent warnings about preliminary status, validation requirements
+2. **Safety Considerations**: Detailed section on safety implications
+3. **Conservative Behavior**: Explanation of conservative design decisions
+4. **REQ Traceability**: Complete traceability to safety requirements
+5. **Cross-References**: Links to related safety modules
+
+### Performance-Critical Modules
+
+Modules affecting performance **SHOULD** include:
+
+1. **Performance Characteristics**: Time/space complexity documentation
+2. **Memory Usage**: Memory allocation patterns and bounds
+3. **Benchmarks**: Performance expectations and constraints
+
+### Integration Modules
+
+Modules providing integration between components **MUST** include:
+
+1. **Architecture Diagrams**: Clear component relationships
+2. **Integration Examples**: End-to-end usage scenarios
+3. **Cross-References**: Comprehensive linking to integrated modules
+
+## Documentation Quality Requirements
+
+### Mandatory Elements
+
+- [x] Module header with WRT identification
+- [x] Copyright and license information
+- [x] SW-REQ-ID traceability (where applicable)
+- [x] Brief module description
+- [x] Usage examples
+- [x] Error documentation for all fallible functions
+- [x] Cross-references to related modules
+
+### Safety-Critical Additional Requirements
+
+- [x] Safety warnings and considerations
+- [x] Conservative behavior explanations
+- [x] Safety requirement traceability
+- [x] Validation guidance references
+
+### Quality Standards
+
+1. **Clarity**: Documentation must be understandable by safety engineers
+2. **Completeness**: All public APIs documented with examples
+3. **Accuracy**: Documentation must match implementation behavior
+4. **Consistency**: Follow standard templates and formatting
+5. **Traceability**: Clear links to requirements and related modules
+
+## Cross-Reference Guidelines
+
+### Module Cross-References
+
+Use this format for linking related modules:
+
+```rust
+//! # Cross-References
+//!
+//! - [`crate::module_name`]: {Relationship description}
+//! - [`other_crate::module`]: {Integration details}
+```
+
+### Function Cross-References
+
+Link to related functions and types:
+
+```rust
+/// See also [`related_function`] for {related functionality}.
+/// 
+/// This function works with [`StructName`] to provide {combined functionality}.
+```
+
+## REQ Traceability Standards
+
+### Format
+
+```rust
+//! # REQ Traceability
+//!
+//! - REQ_CATEGORY_ID_001: {Requirement description and how satisfied}
+//! - REQ_CATEGORY_ID_002: {Another requirement}
+```
+
+### Categories
+
+- `REQ_SAFETY_*`: Safety-related requirements
+- `REQ_MEM_*`: Memory management requirements  
+- `REQ_RESOURCE_*`: Resource management requirements
+- `REQ_HOST_*`: Host integration requirements
+- `REQ_COMPONENT_*`: Component model requirements
+- `REQ_PLATFORM_*`: Platform-specific requirements
+
+## Example Implementations
+
+### Excellent Example: `safety_system.rs`
+
+The safety system module demonstrates all documentation best practices:
+- Comprehensive module documentation with warnings
+- Detailed safety considerations and conservative behavior explanation
+- Rich cross-references and requirement traceability
+- Multiple usage examples with safety implications
+
+### Good Example: `memory_system.rs`
+
+The memory system module shows strong documentation with:
+- Clear architecture documentation
+- Safety considerations for memory allocation
+- Cross-references to safety and bounded collection modules
+- Complete requirement traceability
+
+## Automated Checks
+
+### Documentation Completeness
+
+```bash
+# Check for missing module documentation
+cargo doc --no-deps --document-private-items
+
+# Validate documentation examples compile
+cargo test --doc
+
+# Check for missing cross-references
+scripts/check-cross-references.sh
+```
+
+### REQ Traceability Validation
+
+```bash
+# Validate requirement traceability matrix
+scripts/validate-req-traceability.sh
+
+# Generate traceability report
+scripts/generate-traceability-report.sh
+```
+
+## Review Checklist
+
+### Module Documentation Review
+
+- [ ] Header follows standard format with correct crate name
+- [ ] SW-REQ-ID traceability included (if applicable)
+- [ ] Architecture section describes module design
+- [ ] Design principles clearly stated
+- [ ] Safety considerations documented (for safety-critical modules)
+- [ ] Usage examples provided and tested
+- [ ] Cross-references to related modules included
+- [ ] REQ traceability complete and accurate
+
+### Function Documentation Review
+
+- [ ] Brief description clear and accurate
+- [ ] All parameters documented with constraints
+- [ ] Return value and error conditions documented
+- [ ] Safety section included (for safety-critical functions)
+- [ ] Examples provided for complex functions
+- [ ] REQ traceability for requirement-satisfying functions
+
+### Safety Documentation Review
+
+- [ ] Safety warnings prominently displayed
+- [ ] Conservative behavior rationale explained
+- [ ] Safety requirements clearly linked
+- [ ] Validation guidance referenced
+- [ ] Cross-references to safety standards included
+
+## Documentation Tools
+
+### VS Code Snippets
+
+Create documentation snippets for consistent formatting:
+
+- `wrt-module-doc`: Module documentation template
+- `wrt-function-doc`: Function documentation template
+- `wrt-safety-doc`: Safety-critical function documentation
+
+### Documentation Generation
+
+```bash
+# Generate complete documentation
+just docs
+
+# Generate documentation with safety analysis
+just docs-safety
+
+# Validate documentation consistency
+just check-docs-consistency
+```
+
+This documentation standard ensures that WRT maintains world-class documentation quality appropriate for safety-critical software development while providing clear guidance for developers and safety engineers.

wrt-debug/src/platform_debug.rs

@@ -8,20 +8,41 @@ use wrt_error::Error;
 
 // Stub imports for Agent B's platform limits - will be replaced during integration
 mod platform_stubs {
+    /// Comprehensive platform limits configuration
+    ///
+    /// This structure defines platform-specific resource limits that constrain
+    /// system operation and debug capabilities. These limits are used to ensure
+    /// that debug operations do not exceed platform resource constraints.
     pub struct ComprehensivePlatformLimits {
+        /// Maximum total memory available on the platform (bytes)
         pub max_total_memory: usize,
+        /// Maximum memory overhead allowed for debug features (bytes)
         pub max_debug_overhead: usize,
+        /// Platform identifier for platform-specific optimizations
         pub platform_id: PlatformId,
     }
 
+    /// Platform identifier enumeration
+    ///
+    /// Identifies the target platform to enable platform-specific optimizations
+    /// and resource management strategies.
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
     pub enum PlatformId {
+        /// Linux-based platforms with standard resources
         Linux,
+        /// QNX real-time operating system
         QNX,
+        /// macOS platforms with Darwin kernel
         MacOS,
+        /// VxWorks real-time operating system
         VxWorks,
+        /// Zephyr RTOS for embedded systems
         Zephyr,
+        /// Tock secure embedded operating system
         Tock,
+        /// Generic embedded platforms with limited resources
         Embedded,
+        /// Unknown or unspecified platform
         Unknown,
     }