feat: Claude Code Monitor — lanes, pipelines and a merged workspace

Internal SmartGift build of a Claude Code monitoring dashboard.

Lanes: a durable unit of parallel agent work, one per working directory,
tracked across session restarts. Managed lanes are git worktrees the
dashboard provisions and can reset or remove behind a three-check destroy
guard and a counted preflight; adopted lanes are directories you already
own and are never destroyable.

Pipelines: a lane moves through pipeline stages. A stage the agent declares
with evidence renders green; a stage inferred from the tool-event stream
renders dashed amber and never counts as done. Detection is forward-only
within a 30-minute window, and never writes the declared stage.

Workspace: one page at /run with a lane grid, the selected lane's pipeline,
and a full Claude console behind a disclosure.

.gitattributes

@@ -0,0 +1,25 @@
+# Force LF line endings for all text files, regardless of OS
+* text=auto eol=lf
+
+# Explicitly mark binary files to prevent corruption
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
+*.svg binary
+*.woff binary
+*.woff2 binary
+*.ttf binary
+*.eot binary
+*.db binary
+
+# ── GitHub Linguist overrides — keep language stats honest ──────────────────
+# wiki/mermaid.min.js is a vendored, minified third-party library (Mermaid);
+# it is not project source code and must not count toward language stats.
+wiki/mermaid.min.js linguist-vendored
+
+# wiki/i18n-content.js is machine-assembled translation data (see its header:
+# "AUTO-GENERATED wiki body-content translations ... Do not hand-edit").
+# It is a data bundle keyed by English innerHTML, not hand-written JavaScript.
+wiki/i18n-content.js linguist-generated