Address PR review comments: documentation consistency and code improvements

[Copilot]

Addresses feedback from automated PR review identifying documentation inconsistencies and code quality issues across the codebase.

Documentation Fixes

• Version alignment: Changed FINAL_REPORT.md from v0.3 to v0.1 to match SUMMARY.md
• Test count consistency: Fixed HOLISTIC_VERIFICATION.md to show 27 tests for bitcell-crypto and 157+ total (was showing conflicting 39/148)
• Timeline alignment: Updated COMPLETION_STRATEGY.md target to Mid-January 2026 to match 36-day estimate
• Timeframe clarity: Specified "3-week development sprint" instead of vague "focused development session"

Code Improvements

• Variable naming: Standardized interpreter operands from a/b to lhs/rhs
• Configuration: Made block production interval configurable via NodeConfig.block_time_secs instead of hardcoded constant
• Constants: Extracted MAX_MESSAGE_SIZE (10MB) for network message size limit
• Implementation: Completed prune_old_blocks with actual deletion logic

// Before
const BLOCK_TIME_SECS: u64 = 10; // hardcoded

// After  
pub struct NodeConfig {
    /// Block production interval in seconds.
    /// Defaults to 10 seconds for testing. Use 600 (10 minutes) for production.
    pub block_time_secs: u64,
}

• Documentation: Added test vs production config guidance for ZK circuit parameters

/// # Test vs Production Configuration
/// - **Test values**: `GRID_SIZE = 64`, `BATTLE_STEPS = 10`
/// - **Production values**: `GRID_SIZE = 1024`, `BATTLE_STEPS = 1000`
pub const GRID_SIZE: usize = 64;
pub const BATTLE_STEPS: usize = 10;

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[Copilot]

Pull request overview

This PR addresses automated review feedback by improving documentation consistency and code quality across multiple areas. The changes align version numbers and test counts, improve variable naming conventions, and replace hardcoded values with configurable parameters.

• Documentation fixes ensure consistency across FINAL_REPORT.md (v0.1), HOLISTIC_VERIFICATION.md (27 tests for bitcell-crypto, 157+ total), and timeline alignment
• Code improvements include standardized variable naming (lhs/rhs), configurable block timing, extracted constants, and completed implementation of prune_old_blocks
• Documentation enhancement for ZK circuit parameters with test vs production guidance

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
docs/IMPLEMENTATION_SUMMARY.md	Clarified development timeframe from "focused development session" to "3-week development sprint"
docs/HOLISTIC_VERIFICATION.md	Fixed test count discrepancies (27 tests for bitcell-crypto, 157+ total)
docs/FINAL_REPORT.md	Corrected version from v0.3 to v0.1 to align with SUMMARY.md
docs/COMPLETION_STRATEGY.md	Updated target completion from End of December 2025 to Mid-January 2026
crates/bitcell-zkvm/src/interpreter.rs	Renamed interpreter operands from a/b to lhs/rhs for clarity
crates/bitcell-zkp/src/battle_constraints.rs	Added comprehensive documentation for test vs production ZK circuit configuration
crates/bitcell-state/src/storage.rs	Completed prune_old_blocks implementation with actual block/header deletion logic
crates/bitcell-node/src/validator.rs	Removed hardcoded block time constant in favor of configurable value
crates/bitcell-node/src/network.rs	Extracted MAX_MESSAGE_SIZE constant (10MB) for message size validation
crates/bitcell-node/src/config.rs	Added block_time_secs field to NodeConfig with documentation

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[Copilot]

The newly implemented prune_old_blocks function lacks test coverage. Consider adding a test case that verifies the deletion of old blocks and headers while preserving the most recent blocks, similar to the existing test patterns in the same file (e.g., test_store_and_retrieve_header).