docs(rebrand): update home-dir references to ~/.bcode (auto-migrated in v0.0.19)

Author: Berkay2002

.claude/rules/debugging.md

@@ -19,7 +19,7 @@ The server writes structured NDJSON spans to a local trace file — always on du
 tail -f ./dev/logs/server.trace.ndjson
 
 # In production/CLI mode:
-tail -f ~/.t3/userdata/logs/server.trace.ndjson
+tail -f ~/.bcode/userdata/logs/server.trace.ndjson
 ```
 
 Read `@docs/observability.md` for the full set of jq queries. Key ones:

.docs/scripts.md

@@ -3,9 +3,9 @@
 - `bun run dev` — Starts contracts, server, and web in `turbo watch` mode.
 - `bun run dev:server` — Starts just the WebSocket server (uses Bun TypeScript execution).
 - `bun run dev:web` — Starts just the Vite dev server for the web app.
-- Dev commands default the base dir to `~/.t3` (overridable via `BCODE_HOME` or `--base-dir`) and place dev state under `$BCODE_HOME/dev` to keep it isolated from desktop/prod state.
+- Dev commands default the base dir to `~/.bcode` (overridable via `BCODE_HOME` or `--base-dir`) and place dev state under `$BCODE_HOME/dev` to keep it isolated from desktop/prod state. Existing `~/.t3/` installs are auto-migrated on first launch of v0.0.19.
 - Override server CLI-equivalent flags from root dev commands with `--`, for example:
-  `bun run dev -- --base-dir ~/.t3-2`
+  `bun run dev -- --base-dir ~/.bcode-2`
 - `bun run start` — Runs the production server (serves built web app as static files).
 - `bun run build` — Builds contracts, web app, and server through Turbo.
 - `bun run typecheck` — Strict TypeScript checks for all packages.

docs/observability.md

@@ -22,7 +22,7 @@ If you want a log message to show up in the trace file, emit it inside an active
 
 ### Traces
 
-Completed spans are written as NDJSON records to `serverTracePath` (by default, `~/.t3/userdata/logs/server.trace.ndjson` — the home directory flips to `~/.bcode` in a future release alongside an auto-migration).
+Completed spans are written as NDJSON records to `serverTracePath` (by default, `~/.bcode/userdata/logs/server.trace.ndjson`; existing `~/.t3/userdata/…` contents are auto-migrated on first launch of v0.0.19).
 
 Important fields in each record: