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Blueprint
§01 / 02Features · drawing schedule

The complete set of sheets.

Every feature in the platform, grouped the way an AEC practice actually runs. Not marketing fluff — the actual tables, states, and behaviours that ship today. Bookmark this; treat it as the drawing schedule.

§02 / 02Feature schedule
§ 01

Projects & workflow

Five-state workflow
draft → planning → in progress → review → completed, with on-hold
Role-based access
5 platform roles + org-level custom roles with per-project scoping
Industry tagging
construction, architecture, real-estate, infrastructure
Milestones + progress
planned / actual dates, completionPercentage
Append-only timeline
every state change recorded, never mutated
Audit log
who did what, from where, when — immutable
§ 02

Billing — India-first

Seven invoice types
standard · RA bill · advance · retention · final · debit · credit
CGST + SGST / IGST
auto-detected from supplier + buyer state codes
TDS 194C automation
1% or 2%, net payable computed inline
GSTIN validation
15-digit PAN-anchored format enforced
FY invoice numbering
sequential within 01 Apr — 31 Mar
Cumulative RA tracking
previousCumulativeAmount, previousRaBillId
Paise, not floats
integer storage, zero float drift
PDF export
pdfkit with statutory fields
§ 03

Teams, time & attendance

Weekly timesheets
one sheet per user per ISO-week, unique constraint
Time entries
start/end, break, activity type, billable rate
On-site attendance
unique (user, project, date); check-in + check-out
Billable → invoice
convert approved billable entries into a draft invoice
Resource allocation
% or hours/week, startDate/endDate, status
Skills matrix
technical / management / domain / certification
§ 04

Vendors & materials

Vendor master
labor · contractor · material, with GSTIN + PAN
Labor records
per-day, per-category rates × workers count
Work orders
contract amount, advance, retention %, completion %
Material orders
unit price, quantity, delivery dates, quality status
Vendor payments
method, reference, linked to the source record
§ 05

Drawings & files

Git-like drawing tree
folders + files with SHA-256 checksums
Version history
monotonically increasing version per node
Unique S3 keys
project/{id}/drawings/{node}/v{n}
Presigned URLs
never expose raw S3 — always time-bound
File visibility
team · PM only · owner only
§ 06

AI review

Async agents
compliance · budget · timeline · completeness · risk
Per-trigger runs
review on submit, update, or on-demand
Findings log
severity (info/warning/critical), category, suggestion
Human-in-the-loop
resolve findings with a reason, never auto-approve
§ 07

Notifications & chat

In-app + email + FCM
fanned-out asynchronously, never blocks the request
Realtime project chat
Firestore, per-project room, with file attachments
Push notifications
on milestone updates, RFIs, invoice approvals
§ 08

Platform

Multi-tenant
per-organisation data isolation + app gating
App catalogue
billing · AI review · vendors · drawings — toggle per org
Plan definitions
org → plan → add-ons → usage meters
SSO (Enterprise)
Google · Microsoft · Okta
Data residency (Enterprise)
pin to region or self-host
Observability
Winston + OpenTelemetry, SigNoz-ready