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docs: handoff for COLLAB > INDEP task

docs: rewrite README for paper-format iter1 pipeline

docs: handoff for selector improvement task

recipes: add orpo-val-sel-indep-paper.yaml

recipes: add orpo-val-sel-collab-paper.yaml

recipes: add orpo-val-cond-indep-paper.yaml

recipes: add orpo-val-cond-collab-paper.yaml

scripts: add scripts/train_sft_completion_only.py

scripts: add scripts/gen_validator_sft_qwen72b.py

scripts: add scripts/gen_planner_preds_for_validator.py

scripts: add scripts/build_validator_paper_format.py

scripts: add scripts/build_orpo_data.py

scripts: add scripts/compute_bestofn_with_selector.py

scripts: add scripts/run_pipeline_rollouts.py

eval: add paper_greedy_INDEP_passAt1_bird_dev.jsonl

eval: add paper_greedy_COLLAB_passAt1_bird_dev.jsonl

eval: add paper_greedy_SFT_VF_passAt1_bird_dev.jsonl

eval: add paper_greedy_PLANNER_ONLY_passAt1_bird_dev.jsonl

eval: add paper_INDEP_par_passAt8_bird_dev.jsonl

eval: add paper_COLLAB_par_passAt8_bird_dev.jsonl

eval: add paper_SFT_VF_passAt8_bird_dev.jsonl

data: add planner-3B greedy preds on BIRD-train

data: add data/hf_orpo_val_cond_paper_iter1_indep

data: add data/hf_orpo_val_cond_paper_iter1_collab

data: add data/hf_orpo_val_sel_paper_iter1_indep

data: add data/hf_orpo_val_sel_paper_iter1_collab

data: add data/hf_val_cond_paper_v1

data: add data/hf_val_sel_paper_v1

models: add models/selector-3B-sft

models: add models/fixer-1B-orpo-iter1

models: add models/fixer-1B-sft

models: add models/validator-cond-1B-orpo-iter1-indep-paper

models: add models/validator-cond-1B-orpo-iter1-collab-paper

models: add models/validator-cond-1B-sft-paper

models: add models/validator-sel-1B-orpo-iter1-indep-paper

models: add models/validator-sel-1B-orpo-iter1-collab-paper

models: add models/validator-sel-1B-sft-paper

models: add models/planner-3B-orpo-iter1

models: add models/planner-3B-sft

chore: remove stale PROGRESS.md

chore: remove stale recipes/validator-selection-fft-0.5b-v3.yaml

chore: remove stale recipes/validator-condition-fft-v3.yaml

chore: remove stale recipes/validator-condition-fft-0.5b-v3.yaml

chore: remove stale recipes/orpo-planner-collab-iter2.yaml

chore: remove stale recipes/orpo-fixer-replanner-0.5b-iter2.yaml

chore: remove stale scripts/build_validator_sft_v3_balanced.py

chore: remove stale scripts/build_validator_2agents_v3.py

chore: remove stale scripts/build_fixer_replanner_iter2.py

chore: remove stale eval_results