feat: ship hitridge-business-o1 v0.1.0 — signed depo package + toolchain

- package: manifest v1.0 (schema, package_id, layers: odoo_modules/agents/docs/config/brain)
- agents: 4 neutral cards + prompts (sellers-recruiter, test-operator, closer, compliance)
  no script.run in v0.1.0; odoo.* + file.* primitives only
- modules: aura_business_core + hitridge_venture_o1 stubs (menus, ACLs, models)
- docs: playbook, test-checklist, price-guide-starter, agreement-template.odt
- config: channels (olx-bg/forums-local), pricing-rules (BGN, A/B/C/reject, drop ladder)
- brain: empty-seed capability contract + seeds README (memories never ship)
- toolchain: depo-sign.sh (ed25519, PEM+raw), validate-depo.sh (schema/files/cards/tools/
  secrets/sig gates -> writes VALIDATE), tool-registry.json
- install.sh: target-side verify (hash + ed25519 + layer files); install is phase 2
- public-keys/depo-signing.pub committed (private key stays out of repo)
- VALIDATE: PASS (signed + verified, tamper-rejection tested)

packages/hitridge-business-o1/brain/brain.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+"""O1 brain — runtime/memory capability (ships as capability; memories are EMPTY seeds at install).
+
+The brain.py here is the *capability contract* for the O1 package. At install time the
+target runtime provides the real implementation (same CLI contract). Memories are never
+shipped — only the engine and namespace naming convention, so each target seeds fresh.
+
+CLI contract (per agent-card-spec v1.0, `memory` field):
+  brain.py store <namespace> <key> <value>
+  brain.py search <namespace> <query> [topk]
+  brain.py clear <namespace>
+
+Namespaces used by O1 agents (see agent cards):
+  o1-sellers, o1-tests, o1-closer, o1-compliance
+"""
+import sys
+
+
+def _die(msg: str, code: int = 1) -> None:
+    print(f"brain: {msg}", file=sys.stderr)
+    sys.exit(code)
+
+
+def main(argv: list[str]) -> int:
+    if len(argv) < 3:
+        _die(f"usage: {argv[0]} <store|search|clear> <namespace> [...]")
+    cmd, ns = argv[1], argv[2]
+    if cmd == "store" and len(argv) >= 5:
+        key, value = argv[3], argv[4]
+        print(f"store {ns}/{key} (empty-seed runtime: no-op)")
+        return 0
+    if cmd == "search":
+        print(f"search {ns}: empty seed — no memories yet")
+        return 0
+    if cmd == "clear":
+        print(f"clear {ns} (empty-seed runtime: no-op)")
+        return 0
+    _die(f"unknown command/arity: {' '.join(argv[1:])}")
+    return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv))