feat(supervise+orchestrator): slice 11 — per-bottle supervise queue + DLP safelist

Consolidated egress ran every bottle through one process but keyed the
supervise proposal queue off a single SUPERVISE_BOTTLE_SLUG env and kept
one *global* DLP safelist — so in the shared gateway an operator's token
approval for bottle A would (a) be attributed to the wrong bottle and
(b) leak into bottle B's DLP scan (A's approved secret passes B's egress).
This slice keys both per bottle, resolved by source IP.

- policy_resolver: add `resolve_policy_and_bottle_id` — policy + bottle id
  in one `/resolve`, so egress keys routing *and* the supervise
  queue/safelist from a single round-trip. Fail-closed (403 -> (None,None)).
- egress_addon_core: add `resolve_client_context` (+ `ContextResolverLike`)
  returning `(Config, bottle_id)`, sharing the fail-closed parse with
  `resolve_client_config` via `_config_from_policy`.
- egress_addon: `_active_config` -> `_resolve_flow` returns `(Config, slug)`;
  `safe_tokens` set -> per-bottle `_safe_tokens_for(slug)`; the token-allow
  write/await/archive + the approved-token add all use the resolved slug.
  Single-tenant (no resolver) unchanged — slug = the env SUPERVISE_BOTTLE_SLUG.

New tests cover the resolver, the fail-closed context matrix, and the
cross-tenant isolation (an approval lands only in the calling bottle's
safelist; the proposal is keyed by the source-IP-attributed bottle;
unattributed IPs can't supervise).

Out of scope (noted): the git-gate gitleaks-allow hook + supervise_server
agent-proposal paths, and websocket DLP (still self.config-only, inert in
consolidated mode) — follow-up slices.

pyright 0 errors; pylint 9.83/10; unit suite green (1700 tests; the 13
test_sidecar_init /bin/sleep errors are pre-existing NixOS-local noise).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck

bot_bottle/egress_addon_core.py

@@ -421,6 +421,18 @@ class PolicyResolverLike(typing.Protocol):
         ...
 
 
+def _config_from_policy(policy: "str | None") -> "Config":
+    """Parse a resolved policy blob into a Config, fail-closed: None / empty /
+    unparseable all become a deny-all Config (no routes → every request
+    blocked)."""
+    if not policy:
+        return Config(routes=())  # unattributed or empty → deny-all
+    try:
+        return load_config(policy)
+    except ValueError:
+        return Config(routes=())  # unparseable policy → deny
+
+
 def resolve_client_config(
     resolver: PolicyResolverLike, client_ip: str, identity_token: str = ""
 ) -> "Config":
@@ -433,12 +445,33 @@ def resolve_client_config(
         policy = resolver.resolve(client_ip, identity_token)
     except Exception:  # noqa: BLE001  # pylint: disable=broad-exception-caught
         return Config(routes=())  # orchestrator unreachable/errored → deny
-    if not policy:
-        return Config(routes=())  # unattributed or empty → deny-all
+    return _config_from_policy(policy)
+
+
+class ContextResolverLike(typing.Protocol):
+    """The bit of `policy_resolver.PolicyResolver` `resolve_client_context`
+    needs — one round-trip returning both policy and bottle id."""
+
+    def resolve_policy_and_bottle_id(
+        self, source_ip: str, identity_token: str = ...,
+    ) -> "tuple[str | None, str | None]":
+        ...
+
+
+def resolve_client_context(
+    resolver: ContextResolverLike, client_ip: str, identity_token: str = "",
+) -> "tuple[Config, str]":
+    """The calling client's `(Config, bottle_id)` in one round-trip —
+    **fail-closed**. The Config follows `resolve_client_config`'s deny-all
+    rules; the bottle id is `""` whenever unattributed or the orchestrator
+    errored, which the caller treats as "supervise unavailable for this
+    bottle" (never another bottle's queue). One `/resolve` keys both the
+    per-request egress policy and the per-bottle supervise queue + safelist."""
     try:
-        return load_config(policy)
-    except ValueError:
-        return Config(routes=())  # unparseable policy → deny
+        policy, bottle_id = resolver.resolve_policy_and_bottle_id(client_ip, identity_token)
+    except Exception:  # noqa: BLE001  # pylint: disable=broad-exception-caught
+        return Config(routes=()), ""  # orchestrator unreachable/errored → deny
+    return _config_from_policy(policy), (bottle_id or "")
 
 
 # ---------------------------------------------------------------------------
@@ -833,7 +866,9 @@ __all__ = [
     "is_git_fetch_request",
     "load_config",
     "resolve_client_config",
+    "resolve_client_context",
     "PolicyResolverLike",
+    "ContextResolverLike",
     "match_route",
     "outbound_scan_headers",
     "parse_config",