Refactor AI workspace for improved context management and communication integration

- Introduced new commands and skills for workspace memory curation, professional communication, and status reporting.
- Updated existing commands to utilize new skills and improve clarity in instructions.
- Created a new workspace context command to load reusable core and active project profile.
- Enhanced Mattermost inbox integration with support for generic environment variables.
- Established a clear separation between project-independent core logic and project-specific profiles.
- Improved documentation across various files to reflect changes in workflow and command usage.
- Added operational memory management rules to ensure accurate context promotion and correction.
- Updated README and workflow documents to guide users in utilizing the new structure effectively.

scripts/slack/import_slack_export.py

@@ -2,6 +2,7 @@
 
 import argparse
 import json
+import os
 import re
 import sys
 from collections import Counter
@@ -99,7 +100,7 @@ def parse_args() -> argparse.Namespace:
     )
     parser.add_argument(
         "--channel-prefix",
-        default="fidelity",
+        default=os.getenv("AIW_CHANNEL_PREFIX", "fidelity"),
         help="Default channel prefix to auto-detect when --channels is omitted.",
     )
     parser.add_argument(