test(#1017): wire in four CI-fit shell suites, drop their signed exclusions

check-test-enumeration.sh signed four suites as 'likely CI-fit; #1017 burndown'.
Measured all four: each passes standing alone, and each still passes with tmux
removed from PATH entirely (test-start-agent-session.sh writes its own tmux shim
into a fake bin dir, so it never needed the real binary).

Red-first: removing the four exclusion lines makes the guard report exactly four
UNENUMERATED failures. Appending the four to test:framework-shell returns it to
OK, with in-population enumerated going 32 -> 36 and signed exclusions 19 -> 15.

Refs #1017

packages/mosaic/framework/install.sh

@@ -35,18 +35,6 @@ SOURCE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 TARGET_DIR="${MOSAIC_HOME:-$HOME/.config/mosaic}"
 INSTALL_MODE="${MOSAIC_INSTALL_MODE:-prompt}"
 
-# Normalize the ambient umask so directory modes are a property of the installer
-# and not of whatever shell invoked it (#1236). Debian/Ubuntu ship umask 002, so
-# every `mkdir -p` below yielded 0775 — and the fleet env boundary rejects any
-# managed directory with `mode & 0o022`, which made `mosaic fleet init --write`
-# impossible on a stock install of those distros. Fedora/RHEL ship 022 and did
-# not trip it, so the product worked or did not depending on the operator's
-# login shell. 022 is what this script already assumes it produces: see the
-# umask note in make_durable_snapshot, which restores to the ambient value
-# precisely so "every later sync copy and new framework dir" gets 0644/0755.
-# Now that value is 022 rather than whatever was inherited.
-umask 022
-
 # Deliberately parsed from "$@" (a real, explicit, per-invocation argument) —
 # never an environment variable — so this opt-out can never sit silently
 # inherited in a shell profile. See #869 Point-1 C2.
@@ -708,52 +696,6 @@ sync_framework
 mkdir -p "$TARGET_DIR/memory"
 mkdir -p "$TARGET_DIR/credentials"
 
-# Three directories must be 0700, not merely not-group-writable (#1236).
-# The fleet code guards them with two different masks in two different
-# languages, and the strict one wins:
-#
-#   assertPrivateManagedDirectory (fleet-reconciler.js, `mode & 0o077`)
-#       -> MOSAIC_HOME and MOSAIC_HOME/fleet, checked before the roster lock is
-#          taken, so every mutating `mosaic fleet` command dies at 0755.
-#   assert_private_directory (tools/fleet/start-agent-session.sh, `mode & 077`)
-#       -> MOSAIC_HOME/fleet/agents, checked before a pane is ever spawned.
-#
-# Their laxer siblings (`mode & 0o022`) accept 0755, which is why normalizing
-# the umask above is necessary and not sufficient — a correct umask-022 install
-# still produces 0755 and still cannot run `mosaic fleet init --write`. Say the
-# strict modes outright rather than inferring them from a umask.
-#
-# Only these. The rest of the tree is content, stays 0755, and is only ever
-# reached by the 0o022 checks, which 0755 satisfies.
-chmod 700 "$TARGET_DIR" 2>/dev/null || \
-  warn "Could not set 0700 on $TARGET_DIR — 'mosaic fleet' mutations will fail as unsafe-permissions."
-if [[ -d "$TARGET_DIR/fleet" ]]; then
-  chmod 700 "$TARGET_DIR/fleet" 2>/dev/null || \
-    warn "Could not set 0700 on $TARGET_DIR/fleet — 'mosaic fleet' mutations will fail as unsafe-permissions."
-fi
-# fleet/agents does not exist on a first install — the CLI creates it 0700 on
-# demand. It is chmod'd here for the UPGRADE case: a tree built under umask 002
-# has it at 0775, and the repair sweep below cannot rescue it, because stripping
-# group/other write from 0755 leaves 0750 and `mode & 077` is still non-zero.
-if [[ -d "$TARGET_DIR/fleet/agents" ]]; then
-  chmod 700 "$TARGET_DIR/fleet/agents" 2>/dev/null || \
-    warn "Could not set 0700 on $TARGET_DIR/fleet/agents — agent sessions will fail to start as unsafe-permissions."
-fi
-# credentials/ holds secrets and was never meant to be group-readable either.
-# It is not on the fleet boundary, so a failure here breaks nothing — but it is
-# the one directory where a silently-failed chmod leaves secrets group-readable,
-# which is precisely the failure worth a line in the output.
-chmod 700 "$TARGET_DIR/credentials" 2>/dev/null || \
-  warn "Could not set 0700 on $TARGET_DIR/credentials — stored secrets may be readable by other users on this host."
-
-# Repair an existing tree. The umask above only governs directories this run
-# creates, so a host installed under umask 002 before this fix keeps its 0775
-# dirs through every upgrade and stays broken. Strips group/other WRITE only —
-# never read or execute — so it can repair the boundary violation without
-# changing who can traverse or read anything. Scoped to directories: file modes
-# are the manifest's business, not this fix's.
-find "$TARGET_DIR" -type d -perm /022 -exec chmod go-w {} + 2>/dev/null || true
-
 # Reconcile contract files from defaults/ into the framework root: framework-owned
 # files (CONSTITUTION/AGENTS/STANDARDS) are overwritten every upgrade (a divergent
 # copy is backed up once); user-seeded files (TOOLS) are written on first install only.

packages/mosaic/framework/tools/quality/test-enumeration-exclusions.txt

@@ -32,10 +32,6 @@ packages/mosaic/framework/tools/tmux/test-send-message-socket.sh | requires a re
 packages/mosaic/framework/tools/tmux/test-send-message-verdict.sh | requires real tmux-pane fixtures on a throwaway socket; CI image ships no tmux; #1017 burndown (same condition as its sibling)
 
 # --- single-suite directories: unmeasured in CI ---
-packages/mosaic/framework/tools/fleet/test-start-agent-session.sh | unmeasured in CI image; stubs tmux via a fake bin dir, likely CI-fit; #1017 burndown
-packages/mosaic/framework/tools/glpi/test-list-http-status.sh | unmeasured in CI image; stub-based (#807 regression harness), likely CI-fit; #1017 burndown
-packages/mosaic/framework/tools/orchestrator/test-board-roll.sh | unmeasured in CI image; file-fixture based, likely CI-fit; #1017 burndown
-packages/mosaic/framework/tools/woodpecker/test-ci-wait-exit-matrix.sh | unmeasured in CI image; drives ci-wait.sh against a stub pipeline-status.sh, likely CI-fit; #1017 burndown
 
 # --- naming-boundary files the strict test-*.sh prefix cannot even name ---
 # (#1017: three independent censuses handled the microtest file three different

packages/mosaic/package.json

@@ -25,7 +25,7 @@
     "lint": "eslint src",
     "typecheck": "tsc --noEmit",
     "test": "vitest run --passWithNoTests && pnpm run test:framework-shell",
-    "test:framework-shell": "bash framework/tools/quality/scripts/check-test-enumeration.sh && bash framework/tools/quality/scripts/test-check-test-enumeration.sh && python3 src/lease-broker/daemon_deadline_unittest.py && python3 src/lease-broker/normative_fragments_unittest.py && python3 src/lease-broker/promotion_binding_unittest.py && python3 src/lease-broker/promotion_trigger_unittest.py && python3 src/lease-broker/receipt_challenge_unittest.py && python3 src/lease-broker/context_recovery_unittest.py && python3 src/lease-broker/recovery_runtime_unittest.py && python3 src/lease-broker/recovery_b1_adversarial_unittest.py && python3 src/lease-broker/receipt_observer_client_unittest.py && python3 src/lease-broker/invariant_r_unittest.py && python3 src/lease-broker/framework_skill_portability_unittest.py && python3 src/mutator-gate/runtime_tools_unittest.py && python3 src/mutator-gate/runtime_launch_guard_unittest.py && python3 src/mutator-gate/version_coupling_unittest.py && python3 framework/tools/lease-broker/check-runtime-launches.py --root ../.. && bash framework/tools/codex/test-pr-diff-context.sh && bash framework/tools/qa/test-deps-preflight.sh && bash framework/tools/git/test-pr-review-gitea-comment.sh && bash framework/tools/git/test-pr-review-repo-host-override.sh && bash framework/tools/git/test-ci-queue-wait-branch-absent.sh && bash framework/tools/git/test-ci-queue-wait-tristate.sh && bash framework/tools/git/test-ci-queue-wait-github-checks.sh && bash framework/tools/git/test-pr-merge-queue-branch.sh && bash framework/tools/git/test-pr-merge-head-pin.sh && bash framework/tools/git/test-pr-merge-message-field.sh && bash framework/tools/git/test-git-credential-mosaic.sh && bash framework/tools/git/test-gitea-token-identity.sh && bash framework/tools/woodpecker/test-terminal-green-contract.sh && bash framework/tools/_scripts/test-install-ordering-guard.sh && bash framework/tools/_scripts/test-mosaic-init-rce.sh && bash framework/tools/tmux/agent-send.test.sh && bash framework/tools/wake/test-wake-store-ack.sh && bash framework/tools/wake/test-wake-store-enqueue-race.sh && bash framework/tools/wake/test-wake-digest-hmac.sh && bash framework/tools/wake/test-wake-digest-quarantine.sh && bash framework/tools/wake/test-wake-detector.sh && bash framework/tools/wake/test-wake-fn-oracle.sh && bash framework/tools/wake/test-wake-reconcile.sh && bash framework/tools/wake/test-wake-beacon.sh && bash framework/tools/wake/test-wake-preimage.sh && bash framework/tools/wake/test-wake-install.sh"
+    "test:framework-shell": "bash framework/tools/quality/scripts/check-test-enumeration.sh && bash framework/tools/quality/scripts/test-check-test-enumeration.sh && python3 src/lease-broker/daemon_deadline_unittest.py && python3 src/lease-broker/normative_fragments_unittest.py && python3 src/lease-broker/promotion_binding_unittest.py && python3 src/lease-broker/promotion_trigger_unittest.py && python3 src/lease-broker/receipt_challenge_unittest.py && python3 src/lease-broker/context_recovery_unittest.py && python3 src/lease-broker/recovery_runtime_unittest.py && python3 src/lease-broker/recovery_b1_adversarial_unittest.py && python3 src/lease-broker/receipt_observer_client_unittest.py && python3 src/lease-broker/invariant_r_unittest.py && python3 src/lease-broker/framework_skill_portability_unittest.py && python3 src/mutator-gate/runtime_tools_unittest.py && python3 src/mutator-gate/runtime_launch_guard_unittest.py && python3 src/mutator-gate/version_coupling_unittest.py && python3 framework/tools/lease-broker/check-runtime-launches.py --root ../.. && bash framework/tools/codex/test-pr-diff-context.sh && bash framework/tools/qa/test-deps-preflight.sh && bash framework/tools/git/test-pr-review-gitea-comment.sh && bash framework/tools/git/test-pr-review-repo-host-override.sh && bash framework/tools/git/test-ci-queue-wait-branch-absent.sh && bash framework/tools/git/test-ci-queue-wait-tristate.sh && bash framework/tools/git/test-ci-queue-wait-github-checks.sh && bash framework/tools/git/test-pr-merge-queue-branch.sh && bash framework/tools/git/test-pr-merge-head-pin.sh && bash framework/tools/git/test-pr-merge-message-field.sh && bash framework/tools/git/test-git-credential-mosaic.sh && bash framework/tools/git/test-gitea-token-identity.sh && bash framework/tools/woodpecker/test-terminal-green-contract.sh && bash framework/tools/_scripts/test-install-ordering-guard.sh && bash framework/tools/_scripts/test-mosaic-init-rce.sh && bash framework/tools/tmux/agent-send.test.sh && bash framework/tools/wake/test-wake-store-ack.sh && bash framework/tools/wake/test-wake-store-enqueue-race.sh && bash framework/tools/wake/test-wake-digest-hmac.sh && bash framework/tools/wake/test-wake-digest-quarantine.sh && bash framework/tools/wake/test-wake-detector.sh && bash framework/tools/wake/test-wake-fn-oracle.sh && bash framework/tools/wake/test-wake-reconcile.sh && bash framework/tools/wake/test-wake-beacon.sh && bash framework/tools/wake/test-wake-preimage.sh && bash framework/tools/wake/test-wake-install.sh && bash framework/tools/fleet/test-start-agent-session.sh && bash framework/tools/glpi/test-list-http-status.sh && bash framework/tools/orchestrator/test-board-roll.sh && bash framework/tools/woodpecker/test-ci-wait-exit-matrix.sh"
   },
   "dependencies": {
     "@mosaicstack/brain": "workspace:*",