feat(orchestrator): read the pkgmgr branch tree file instead of running git

Phase 3 of requirement 001. The orchestrator no longer starts git: orchestrator/kvb_orchestrator/tree.py maps the document that pkgmgr branch tree writes (repos, branches, worktrees, detached heads, delete_ready) onto the Tree view, re-reads it when mtime or size change, and reports a missing or broken file as an empty tree with the error. compose.yml mounts the tree directory read-only (a file mount would keep the replaced inode). /api/state touches state/tree-heartbeat; kvb-orchestrator-tree.timer runs every minute and its oneshot service runs only while that heartbeat is younger than 5 minutes, with PATH=/usr/bin:/bin and the pkgmgr venv that the install builds from the newest v* tag a fully trusted GPG key signed, cloned fresh from PKGMGR_REPO because the local checkout's config is sandbox-writable.

Dialectic verdict 2026-11-06 (2 rounds, 5 skeptics, ~85 %): hardened git runner in pkgmgr, gc classification shared with the tree scan, forge facts only from an unlocked Secret Service token with a 600 s cache, atomic tree output refreshed by open/close/drop/gc, host units outside sandbox-writable paths, orchestrator reads the file only. Losing objections: extending the host runner (it would run bash -c on signed text), a new payload kind, copying the pkgmgr checkout, a tree limited to .worktrees. Operator answers: signed-tag venv, UI delete keeps volumes and is local only, ignored files beyond known caches block a delete, scan only while the page polls. Delete jobs, gc_item signing and the UI delete path follow in phase 4.

MEDUSA acceptances (kvb-think-criticize 2026-11-07, 1 skeptic): MEDUSA-MM-SCAN-058 orchestrator/server.py:64 and :80 false positives (case-insensitive substring pla in --templates and Places; --tree-file is a read-only JSON file, no model loading).

🎯 Fix: 93 %
💥 Break: 4 %
💸 Cost: –
⏱️ Time: –
🛡️ Security: 100 %
🏆 Score: 89
🚦 Gate: ✅ 90/5, cost and time <= 100, security 100 %

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_hub_speech.py

@@ -174,8 +174,8 @@ class TestHubSpeech(HubCase):
     def test_the_server_requires_every_engine_argument(self):
         args = {
             "--bind": "127.0.0.1", "--listen-port": "0", "--public-port": "1", "--council": str(self.council), "--pages": str(self.pages), "--state": str(self.state),
-            "--host-state": str(HOST_STATE), "--skills": str(self.outside), "--transcripts": str(self.projects), "--templates": str(HUB / "templates"), "--repos": str(self.repos),
-            "--worktrees": str(self.worktrees), "--timers": str(self.timers), "--llm-key-file": os.devnull, "--llm-url": "", "--llm-model": "",
+            "--host-state": str(HOST_STATE), "--skills": str(self.outside), "--transcripts": str(self.projects), "--templates": str(HUB / "templates"),
+            "--tree-file": str(self.tree_file), "--timers": str(self.timers), "--llm-key-file": os.devnull, "--llm-url": "", "--llm-model": "",
             "--piper": str(self.engines.piper), "--voices": str(self.engines.voices), "--operator-voice": "en_US-test-high:9", "--whisper": str(self.engines.whisper),
             "--whisper-model": str(self.engines.whisper_model), "--scratch": str(self.engines.scratch), "--approvers": str(self.approvers),
         }