feat(cli): restructure run folder and improve terminal UX (#383)

* feat: surface report at run root and nest run internals under .shannon

* feat: use plain-language wording in user-facing terminal messages

* feat(cli): guide users to watch scan progress and surface report path on start

* docs: sync run-folder layout and CLI wording across docs and comments

* feat(cli): add version command reporting package version or git SHA

* feat(cli): detect TTY for interactive prompts, color, and progress output

* docs: document --yes flag, version command, and tty module

* fix(cli): FORCE_COLOR precedence and plain uninstall --yes output

* fix(cli): respect empty NO_COLOR

* fix(cli): let NO_COLOR take precedence over FORCE_COLOR

* docs: mark claude-code-router integration as removed

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -69,9 +69,9 @@ body:
 
         Issues without this information may be difficult to triage.
 
-        - Check the workflow log:
-            - **npx mode:** `~/.shannon/workspaces/<workspace>/workflow.log`
-            - **Local mode:** `./workspaces/<workspace>/workflow.log`
+        - Check the scan log:
+            - **npx mode:** `~/.shannon/workspaces/<workspace>/.shannon/workflow.log`
+            - **Local mode:** `./workspaces/<workspace>/.shannon/workflow.log`
           Use `grep` or search to identify errors.
           Paste the relevant error output below.
         - Temporal: