feat(framework): P0 — MIT license + executable-leak sanitization

First phase of the framework constitution alpha. No behavior change for
configured installs.

- Add MIT LICENSE (root + framework bundle) + "license":"MIT" in manifests
- Drop private jarvis-brain credential fallback at 3 sites; default to
  $HOME/.config/mosaic/credentials.json (aligns with #551)
- prevent-memory-write.sh: soft-degrade OpenBrain nudge via ${OPENBRAIN_URL},
  removing hardcoded brain.woltje.com; still blocks the write

Refs #542, closes #569

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Mosaic Stack
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

package.json

@@ -23,5 +23,6 @@
     "turbo": "^2.0.0",
     "typescript": "^5.8.0",
     "vitest": "^2.0.0"
-  }
+  },
+  "license": "MIT"
 }

packages/mosaic/framework/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Mosaic Stack
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/mosaic/framework/tools/_lib/credentials.sh

@@ -17,10 +17,10 @@
 # Run `load_credentials --help` for details.
 
 if [[ -z "${MOSAIC_CREDENTIALS_FILE:-}" ]]; then
-  for _cand in "$HOME/.config/mosaic/credentials.json" "$HOME/src/jarvis-brain/credentials.json"; do
+  for _cand in "$HOME/.config/mosaic/credentials.json"; do
     if [[ -f "$_cand" ]]; then MOSAIC_CREDENTIALS_FILE="$_cand"; break; fi
   done
-  : "${MOSAIC_CREDENTIALS_FILE:=$HOME/src/jarvis-brain/credentials.json}"
+  : "${MOSAIC_CREDENTIALS_FILE:=$HOME/.config/mosaic/credentials.json}"
 fi
 
 _mosaic_require_jq() {

packages/mosaic/framework/tools/git/detect-platform.sh

@@ -86,7 +86,7 @@ gitea_url_matches_host() {
 
 get_gitea_service_for_host() {
     local host="$1"
-    local cred_file="${MOSAIC_CREDENTIALS_FILE:-$HOME/src/jarvis-brain/credentials.json}"
+    local cred_file="${MOSAIC_CREDENTIALS_FILE:-$HOME/.config/mosaic/credentials.json}"
 
     case "$host" in
         git.mosaicstack.dev)

packages/mosaic/framework/tools/health/stack-health.sh

@@ -20,7 +20,7 @@ source "$MOSAIC_HOME/tools/_lib/credentials.sh"
 FORMAT="table"
 SINGLE_SERVICE=""
 QUIET=false
-CRED_FILE="${MOSAIC_CREDENTIALS_FILE:-$HOME/src/jarvis-brain/credentials.json}"
+CRED_FILE="${MOSAIC_CREDENTIALS_FILE:-$HOME/.config/mosaic/credentials.json}"
 
 while getopts "f:s:qh" opt; do
   case $opt in

packages/mosaic/framework/tools/qa/prevent-memory-write.sh

@@ -26,7 +26,11 @@ FILE_PATH="${FILE_PATH/#\~/$HOME}"
 # Block writes to Claude Code auto-memory files
 if [[ "$FILE_PATH" =~ /.claude/projects/.+/memory/.*\.md$ ]]; then
   echo "BLOCKED: Do not write agent learnings to ~/.claude/projects/*/memory/ — this is a runtime-specific silo."
-  echo "Use OpenBrain instead: MCP 'capture' tool or REST POST https://brain.woltje.com/v1/thoughts"
+  if [[ -n "${OPENBRAIN_URL:-}" ]]; then
+    echo "Use OpenBrain instead: MCP 'capture' tool or REST POST ${OPENBRAIN_URL%/}/v1/thoughts"
+  else
+    echo "Use OpenBrain instead: the 'capture' MCP tool (set OPENBRAIN_URL for the REST endpoint)."
+  fi
   echo "File blocked: $FILE_PATH"
   exit 2
 fi

packages/mosaic/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mosaicstack/mosaic",
-  "version": "0.0.33",
+  "version": "0.0.34",
   "repository": {
     "type": "git",
     "url": "https://git.mosaicstack.dev/mosaicstack/stack.git",
@@ -63,5 +63,6 @@
   "files": [
     "dist",
     "framework"
-  ]
+  ],
+  "license": "MIT"
 }

packages/mosaic/src/commands/fleet.ts

@@ -1,5 +1,5 @@
 import { constants } from 'node:fs';
-import { access, copyFile, mkdir, readFile, writeFile } from 'node:fs/promises';
+import { access, chmod, copyFile, mkdir, readFile, writeFile } from 'node:fs/promises';
 import { homedir, hostname } from 'node:os';
 import { dirname, join, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
@@ -478,18 +478,19 @@ async function installFleet(cmd: Command, frameworkRoot: string): Promise<void>
   await mkdir(activePaths.systemdUserDir, { recursive: true });
   await mkdir(activePaths.agentEnvDir, { recursive: true });
 
+  const startAgentSessionPath = join(activePaths.fleetToolsDir, 'start-agent-session.sh');
+  const sendMessagePath = join(activePaths.tmuxToolsDir, 'send-message.sh');
+  const agentSendPath = join(activePaths.tmuxToolsDir, 'agent-send.sh');
+  const executableToolPaths = [startAgentSessionPath, sendMessagePath, agentSendPath];
   await copyFile(
     join(frameworkRoot, 'tools', 'fleet', 'start-agent-session.sh'),
-    join(activePaths.fleetToolsDir, 'start-agent-session.sh'),
-  );
-  await copyFile(
-    join(frameworkRoot, 'tools', 'tmux', 'send-message.sh'),
-    join(activePaths.tmuxToolsDir, 'send-message.sh'),
-  );
-  await copyFile(
-    join(frameworkRoot, 'tools', 'tmux', 'agent-send.sh'),
-    join(activePaths.tmuxToolsDir, 'agent-send.sh'),
+    startAgentSessionPath,
   );
+  await copyFile(join(frameworkRoot, 'tools', 'tmux', 'send-message.sh'), sendMessagePath);
+  await copyFile(join(frameworkRoot, 'tools', 'tmux', 'agent-send.sh'), agentSendPath);
+  for (const toolPath of executableToolPaths) {
+    await chmod(toolPath, 0o755);
+  }
   await copyFile(
     join(frameworkRoot, 'systemd', 'user', 'mosaic-tmux-holder.service'),
     join(activePaths.systemdUserDir, 'mosaic-tmux-holder.service'),