feat: wire breakpilot-compliance to Infisical for local dev

- Add .infisical.json linking the repo to the breakpilot-compliance
  project on the self-hosted secrets.meghsakha.com instance.
- Add Makefile with infisical-aware targets (make dev, dev-build,
  dev-down, secrets, secrets-set). `make dev` runs `infisical run
  --env=dev -- docker compose up`, so secrets are injected at run
  time and .env files no longer touch disk.
- Add INFISICAL_SETUP.md with per-developer onboarding (CLI install,
  login, verify project link, run targets, Claude Code usage patterns,
  troubleshooting).
- Update README Quick Start to drop the cp .env.example .env step and
  point at make dev + INFISICAL_SETUP.md.
- Remove HashiCorp Vault references from CLAUDE.md (core-services list
  + sensitive-files list) and compliance-checklist.md TOM section;
  replace with Infisical.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -42,23 +42,26 @@ All containers share the external `breakpilot-network` Docker network and depend
 
 ## Quick Start
 
-**Prerequisites:** Docker, Go 1.24+, Python 3.12+, Node.js 20+
+**Prerequisites:** Docker, Go 1.24+, Python 3.12+, Node.js 20+, [Infisical CLI](https://infisical.com/docs/cli/overview)
 
 ```bash
 git clone ssh://git@gitea.meghsakha.com:22222/Benjamin_Boenisch/breakpilot-compliance.git
 cd breakpilot-compliance
 
-# Copy and populate secrets (never commit .env)
-cp .env.example .env
+# One-time per machine: log in to the self-hosted Infisical instance
+infisical login --domain https://secrets.meghsakha.com
 
-# Start all services
-docker compose up -d
+# Start the full stack with secrets injected from Infisical (env=dev)
+make dev
 ```
 
+Secrets are pulled from Infisical (`secrets.meghsakha.com`) at runtime; `.env` files are not used. See [INFISICAL_SETUP.md](./INFISICAL_SETUP.md) for full onboarding, and `make help` for the rest of the targets (`dev-build`, `dev-down`, `secrets`, `secrets-set`).
+
 For the Orca/Hetzner production target (x86_64), use the override:
 
 ```bash
-docker compose -f docker-compose.yml -f docker-compose.hetzner.yml up -d
+make dev ENV=prod  # or:
+infisical run --env=prod -- docker compose -f docker-compose.yml -f docker-compose.hetzner.yml up -d
 ```
 
 ---