Parse a Primavera P6 XER file and return basic project information:
project list with status breakdowns, total activities, resources, calendars,
WBS elements, and relationships.

Get activities from an XER file.

Filter options:
- project_id: numeric P6 project ID
- project_short_name: project short name string
- status: TK_NotStart | TK_Active | TK_Complete
- task_type: TT_Task | TT_Mile | TT_FinMile | TT_WBS
- limit: max rows returned (default 100)

Find critical path activities (total float <= 0, incomplete only).
Results are sorted by early start date ascending.
Accepts either project_id (numeric) or project_short_name as a filter.

Summarize resource utilization: planned/actual hours and costs per resource.
Labor resources (RT_Labor) are flagged as over_allocated if planned hours
exceed max_hours_per_year (default 2080 = 40 hrs/week x 52 weeks).
Results are sorted by planned hours descending.

DCMA-style schedule quality check on open/in-progress activities.

Identifies:
- Activities missing predecessors (excluding start milestones)
- Activities missing successors (excluding finish milestones)
- Long-duration activities (threshold: long_duration_days, default 20)
- High-float activities (threshold: high_float_days, default 44)
- TT_Task activities without any resource assignment
- Activities missing early start dates

List all resources in an XER file.
Optionally filter by type: RT_Labor | RT_Mat | RT_Equip

Get resource-activity assignments, enriched with resource and activity names.
- rsrc_name: partial match on resource name (case-insensitive)
- task_code: exact match on activity task code

Get activity predecessor/successor relationships, enriched with task codes.
If task_code is supplied, returns only relationships where that activity
appears as the successor or as the predecessor.

Comprehensive schedule summary: activity counts by status, critical activity count,
milestone count, resource/calendar/WBS/relationship totals, and date range.

Calculate Earned Value Management (EVM) metrics per project:
PV (Planned Value), EV (Earned Value), AC (Actual Cost),
CV (Cost Variance), SV (Schedule Variance), CPI, SPI, EAC.

Get full detail for a single activity by its task_code (case-insensitive).
Returns all scheduling fields plus enriched predecessors, successors,
and resource assignments with names and costs.