Can a prompt replace Pipedrive?

Build a pipeline CRM that will not let a deal sit still.

Stack: your choice, Postgres, Docker Compose, one command.

Model: Organisation, Person, Deal, Activity. A Deal has a value, a currency, an expected close date, a stage, an owner, and links to one Organisation and any number of People.

The rule that defines this build: an open Deal must have exactly one scheduled next Activity. Enforce it three ways.
1. Completing an activity opens the "schedule the next one" form immediately, prefilled with a sensible default date, and the deal card is visibly marked until something is scheduled.
2. The pipeline board renders any deal with no scheduled activity, or with an overdue one, in a distinct state that cannot be dismissed.
3. A "Rotting" report lists deals whose last activity is older than a per-stage threshold I configure — early stages rot in seven days, late stages in thirty.

Pipeline board: drag and drop between stages, per-stage totals in the header, weighted total using a per-stage probability I set. Every stage move writes an immutable history row with the timestamp, so I can compute time-in-stage.

One report screen: deals won and lost per month, average time-in-stage per stage, and conversion rate between adjacent stages, computed from the history rows rather than from the current state.

Add notes, file attachments to local disk, tags, saved filters, CSV import with mapping, and CSV export.

Write tests for the no-next-activity invariant — including that closing a deal as Won or Lost releases it — and for time-in-stage across a deal that moved backwards.

Do not build email sync, an integration marketplace, or automation rules. Give the app an outbound webhook on stage change instead, and let the user wire it to whatever they run.