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pad/.env.example
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xarmian 062eef41b2 docs: architecture guide + full .env.example + gitattributes + Makefile note (TASK-687) (#222)
Grouped nice-to-haves called out in the pre-launch audit.

1. docs/architecture.md — new contributor-focused architecture doc.
   CLAUDE.md covers the same ground but is agent-oriented; this is the
   human companion. Covers backend layout, request flow, frontend /
   data model / CLI↔daemon model / agent integration / testing.

2. .env.example — extended to document every PAD_* variable in
   docs/deployment.md (core, database, real-time events, security,
   email). Existing Postgres/Redis + encryption secrets kept at the
   top; new variables grouped by concern with inline comments and
   safe defaults commented out.

3. .gitattributes — normalize LF line endings repo-wide, mark binary
   assets, and flag web/build + web/.svelte-kit as generated so they
   don't pollute GitHub linguist stats or PR diffs.

4. Makefile — CAUTION comment on `make install` noting that the
   `killall -9 pad` step is system-wide; anyone else's pad daemon on
   the same machine gets killed too. Designed for single-developer
   local setups; not for shared hosts.

Parent: PLAN-644.
2026-04-22 20:59:15 -04:00

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# Pad — Docker Compose environment example
#
# Copy to .env, fill in values, then run `docker compose up -d`.
#
# If you don't already have a POSTGRES_PASSWORD, generate one with:
# openssl rand -base64 32
# …and paste it below. Docker Compose WILL refuse to start with the password
# missing; this is deliberate so a fresh deploy can never inherit a known-weak
# default credential.
# REQUIRED — PostgreSQL password for the `pad` user.
POSTGRES_PASSWORD=
# REQUIRED on Postgres — AES-256 encryption key for TOTP seeds and other
# sensitive fields. 64-character hex string (32 bytes). Pad will auto-
# generate one on SQLite deployments but refuses to on Postgres because
# multi-replica deployments would generate divergent keys and fail cross-
# instance decryption. Generate with:
# openssl rand -hex 32
PAD_ENCRYPTION_KEY=
# OPTIONAL — Which host interface the Pad web UI publishes to.
# Default (loopback only) is the safest choice on a fresh install, because
# the bootstrap endpoint is reachable until the first admin is created.
# 127.0.0.1 → localhost only (default)
# 0.0.0.0 → every interface (LAN + internet if no firewall)
# 10.0.0.5 → bind to a specific LAN IP
# PAD_BIND_ADDR=127.0.0.1
# OPTIONAL — Redis auth (docker-compose.prod.yml only).
# If set, Redis starts with `--requirepass` and Pad connects with the password.
# REDIS_PASSWORD=
# OPTIONAL — Pad Cloud sidecar shared secret (cloud mode only).
# PAD_CLOUD_SECRET=
# OPTIONAL — Encryption key for sensitive fields (32-byte hex string).
# If unset, Pad stores 2FA seeds in plaintext — set this for production.
# openssl rand -hex 32
# PAD_ENCRYPTION_KEY=
# OPTIONAL — Trusted reverse-proxy CIDRs. Only peers in these CIDRs may set
# X-Forwarded-For / X-Real-IP. Leave unset for direct-exposed deploys.
# PAD_TRUSTED_PROXIES=10.0.0.0/8,172.16.0.0/12
# OPTIONAL — Bearer token required to scrape /metrics. When unset, /metrics
# is reachable only from loopback (so a Prometheus on the same host keeps
# working without config); when set, every scrape must send
# "Authorization: Bearer $PAD_METRICS_TOKEN".
# openssl rand -hex 32
# PAD_METRICS_TOKEN=
# OPTIONAL — Session IP-change policy.
# Default (unset) logs an ActionSessionIPChanged audit entry when a session
# presents a new client IP and updates the stored IP. "strict" additionally
# destroys the session and forces re-login. Strict mode breaks legitimate
# mobility (mobile roaming, VPN toggles, carrier NAT); enable only for
# high-sensitivity deployments.
# PAD_IP_CHANGE_ENFORCE=strict
# ─────────────────────────────────────────────────────────────────────
# Core server — see docs/deployment.md for full reference.
# ─────────────────────────────────────────────────────────────────────
# Listen address. 0.0.0.0 for containers, 127.0.0.1 for loopback-only.
# PAD_HOST=0.0.0.0
# Listen port.
# PAD_PORT=7777
# Public-facing base URL. Used to build invitation + password-reset links.
# PAD_URL=https://pad.example.com
# Writable data directory — SQLite DB, config, logs. Default: ~/.pad
# PAD_DATA_DIR=/data
# Log level: debug | info | warn | error
# PAD_LOG_LEVEL=info
# Operating mode: local | remote | docker | cloud. Controls how the CLI
# discovers the daemon and which credential keying rules apply.
# PAD_MODE=docker
# ─────────────────────────────────────────────────────────────────────
# Database — SQLite default; set PAD_DB_DRIVER=postgres for Postgres.
# ─────────────────────────────────────────────────────────────────────
# PAD_DB_DRIVER=postgres
# PAD_DB_PATH=/data/pad.db # SQLite path, ignored on Postgres
# PAD_DATABASE_URL=postgres://pad:secret@postgres:5432/pad?sslmode=disable
# ─────────────────────────────────────────────────────────────────────
# Real-time events — cross-instance SSE fan-out via Redis pub/sub.
# Without this, SSE stays in-process (fine for single-node).
# ─────────────────────────────────────────────────────────────────────
# PAD_REDIS_URL=redis://redis:6379
# Global cap on concurrent SSE connections (default: 1000).
# PAD_SSE_MAX_CONNECTIONS=1000
# Per-workspace cap on concurrent SSE connections (default: 100).
# PAD_SSE_MAX_PER_WORKSPACE=100
# ─────────────────────────────────────────────────────────────────────
# Security hardening for production behind TLS.
# ─────────────────────────────────────────────────────────────────────
# Set Secure flag on session cookies — requires TLS.
# PAD_SECURE_COOKIES=true
# Comma-separated list of allowed CORS origins. Leave unset to disable CORS.
# PAD_CORS_ORIGINS=https://pad.example.com,https://app.example.com
# ─────────────────────────────────────────────────────────────────────
# Transactional email via Maileroo. Optional — without it, workspace
# invites fall back to CLI-copyable join codes.
# ─────────────────────────────────────────────────────────────────────
# PAD_MAILEROO_API_KEY=your-sending-key
# PAD_EMAIL_FROM=noreply@example.com
# PAD_EMAIL_FROM_NAME=Pad