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xer-mcp/CLAUDE.md
Bill Ballou af8cdc1d31 feat: add driving flag to relationship query responses
Add computed driving flag to all relationship queries (list_relationships,
get_predecessors, get_successors). A relationship is marked as driving when
the predecessor's early end date plus lag determines the successor's early
start date.

Changes:
- Add early_start_date and early_end_date columns to activities schema
- Parse early dates from TASK table in XER files
- Implement is_driving_relationship() helper with 24hr tolerance for
  calendar gaps
- Update all relationship queries to compute and return driving flag
- Add contract and unit tests for driving flag functionality
- Update spec, contracts, and documentation
2026-01-07 07:21:58 -05:00

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# xer-mcp Development Guidelines
Auto-generated from all feature plans. Last updated: 2026-01-06
## Active Technologies
- SQLite in-memory database (001-schedule-tools)
- Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib) (001-schedule-tools)
## Project Structure
```text
src/
tests/
```
## Commands
cd src [ONLY COMMANDS FOR ACTIVE TECHNOLOGIES][ONLY COMMANDS FOR ACTIVE TECHNOLOGIES] pytest [ONLY COMMANDS FOR ACTIVE TECHNOLOGIES][ONLY COMMANDS FOR ACTIVE TECHNOLOGIES] ruff check .
## Code Style
Python 3.14: Follow standard conventions
## Recent Changes
- 001-schedule-tools: Added Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib)
- 001-schedule-tools: Added Python 3.14 + mcp (MCP SDK), sqlite3 (stdlib)
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