task_charts__waterfall__reverse_step_final_total

Contract

1. Domain: charts
2. Scene id: waterfall
3. Source implementation: src/trace_tasks/tasks/charts/waterfall/reverse_step_final_total.py
4. Public query id: single
5. Prompt query key: reverse_step_final_total

Implementation

1. Registered class: trace_tasks.tasks.charts.waterfall.reverse_step_final_total.ChartsWaterfallReverseStepFinalTotalTask
2. Prompt bundle: src/trace_tasks/resources/prompts/charts/waterfall/charts_waterfall_v1.json
3. Generation is deterministic from instance_seed, explicit params, prompt bundle, renderer config, and code versions.
4. Answers and annotation are produced from the same metadata execution trace.
5. Sampling constrains the target contribution magnitude and counterfactual final total so the reversed total remains inside the visible chart scale.

Annotation Contract

1. Answer schema: integer_value.
2. Annotation schema: bbox_map.
3. final_total_bar marks the full final-total bar.
4. target_contribution_bar marks the full contribution bar whose sign is reversed.

Program Contract

Program: final_total - 2 * delta(target_step); target_step=visible_step_label; output=integer_value; annotation=bbox_map(final_total_bar,target_contribution_bar); scene=waterfall; scope=reverse_step_final_total

Candidate set: the visible waterfall bars, contribution steps, and total bars inside the reverse_step_final_total objective scope. Operands: prompt-bound labels, categories, series names, thresholds, intervals, references, and encoded chart values, plus the task's prompt-bound target operands when present. Operation: evaluate final_total - 2 * delta over the candidate set using the filters, comparisons, aggregations, rankings, projections, or counterfactual edits named in the program expression; generation enforces a unique final answer. Output binding: answer is the integer_value value bound by integer_value. Annotation witnesses: bbox_map witnesses bound by bbox_map(final_total_bar,target_contribution_bar). final_total_bar marks the full final-total bar. target_contribution_bar marks the full contribution bar whose sign is reversed. Query ids: single.

Reasoning Operations

Families: aggregation, state_update, formula_evaluation

Query Details

Query id	Program contract	Answer schema	Annotation schema
single	final_total - 2 * delta(target_step); target_step=visible_step_label; output=integer_value; annotation=bbox_map(final_total_bar,target_contribution_bar); scene=waterfall; scope=reverse_step_final_total	integer_value	bbox_map