Signal

The opportunity

Teams had plenty of research, but no shared way to turn it into action. Signal brings interviews, evidence, and decisions into one focused workflow.

What I explored

• A lightweight evidence model that stays useful over time
• Fast keyboard-first capture for busy research sessions
• Clear decision trails that help new teammates build context

A small technical detail

The interface treats every decision as an immutable event:

from dataclasses import dataclass
from datetime import datetime

@dataclass(frozen=True)
class Decision:
    title: str
    evidence_ids: tuple[str, ...]
    decided_at: datetime

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