wc-decision-logger — log the choice, the option set, and the why

Implements footballfantasy/context/frameworks/decision-log-format.md. The key difference from a normal decision log: here we record a choice among presented options, including the recommendation, the override, and the manager's reasoning — because three learning loops feed on exactly that (archetype scoreboard, revealed preferences, specialist calibration). A bare "chose B" teaches nothing.

Inputs (from the Director, after the manager picks)

• The board (option set with lineage + fitness + variance + dissent), the recommended default.
• The manager's pick, any modification, their stated reasoning, the objective θ/k in force.

Workflow

- [ ] 1. Build the log entry (schema below) — capture the full option set + pick + reasoning + override flag
- [ ] 2. Append atomically to tracker/decisions-log.md (never overwrite)
- [ ] 3. Archive the generation to generations/<round>/ (population, fitnesses, offspring lineage, board, pick)
- [ ] 4. Update tracker/archetype-scoreboard.md (which genotype's blocks were chosen)
- [ ] 5. On override/modification, append a revealed-preference note to manager-profile.md
- [ ] 6. Return the decision_id