Merge pull request #203 from ryanbreen/feat/bsh-default-shell

feat: make bsh (Breenish) the default boot shell

Author: ryanbreen

docs/planning/BREENISH_SHELL_PLAN.md

@@ -29,14 +29,17 @@
   - cd(), pwd(), which(), readFile(), writeFile(), exit() builtins
   - Auto-exec mode for bare commands; directory-aware prompt
   - 86 passing tests, bsh.elf cross-compiles to 303KB
-- **Phase 4**: IN PROGRESS -- Async/await (Promises, event loop)
+- **Phase 4**: COMPLETE (PRs #194-195) -- Async/await (Promises, event loop)
   - Promise object: PromiseState (Fulfilled/Rejected/Pending), ObjectKind::Promise
-  - Promise.resolve(), Promise.reject(), Promise.all() as native functions
+  - Promise.resolve(), Promise.reject(), Promise.all(), Promise.race(), Promise.allSettled()
   - Await opcode: extracts fulfilled value, throws on rejected, passes through non-promises
   - .then()/.catch()/.finally() built-in methods on Promise objects
   - Persistent globals with cross-pool property re-keying for Promise global
-  - 94 passing tests, bsh.elf includes Promise builtins
-- **Phase 5**: IN PROGRESS -- Full shell experience
+  - Async function declarations and async arrow functions
+  - WrapPromise opcode for implicit Promise wrapping
+  - pipe() native function for pipeline execution
+  - 102 passing tests
+- **Phase 5**: COMPLETE (PRs #196-201) -- Full shell experience
   - JSON.parse/JSON.stringify with recursive descent JSON parser
   - Math object: floor, ceil, round, abs, min, max, pow, sqrt, random, log, trunc, PI, E
   - Number object: isInteger, isFinite, isNaN, parseInt, parseFloat
@@ -60,7 +63,10 @@
   - Map and Set collections with full method support (get/set/has/delete/size/clear/keys/values/forEach)
   - do...while loops with continue fix (deferred forward-jump patching)
   - 182 passing tests, bsh v0.5.0 with full shell builtins
-- **Phase 6**: PLANNED -- Advanced features (class, Proxy, JIT)
+  - CI: ecosystem-tests job runs all 182 tests in GitHub Actions (PR #201)
+  - aarch64: libbreenix-libc provides environ/pow/log for cross-compilation (PR #202)
+  - **Default shell**: init.rs and telnetd.rs launch /bin/bsh instead of /bin/init_shell
+- **Phase 6**: PLANNED -- Advanced features (class, regex, modules, Proxy, JIT)
 
 ## Architecture
 

userspace/programs/src/init.rs

@@ -4,15 +4,15 @@
 //!
 //! Spawns:
 //!   - /sbin/telnetd (background service)
-//!   - /bin/init_shell (foreground shell on serial console)
+//!   - /bin/bsh (Breenish ECMAScript shell, foreground on serial console)
 //!
 //! Main loop reaps terminated children with waitpid(WNOHANG) and respawns
 //! crashed services.
 
 use libbreenix::process::{fork, exec, waitpid, getpid, yield_now, ForkResult, WNOHANG};
 
 const TELNETD_PATH: &[u8] = b"/sbin/telnetd\0";
-const SHELL_PATH: &[u8] = b"/bin/init_shell\0";
+const SHELL_PATH: &[u8] = b"/bin/bsh\0";
 
 /// Fork and exec a binary. Returns the child PID on success, -1 on failure.
 fn spawn(path: &[u8], name: &str) -> i64 {
@@ -42,9 +42,9 @@ fn main() {
     print!("[init] Starting /sbin/telnetd...\n");
     let mut telnetd_pid = spawn(TELNETD_PATH, "telnetd");
 
-    // Start interactive shell
-    print!("[init] Starting /bin/init_shell...\n");
-    let mut shell_pid = spawn(SHELL_PATH, "init_shell");
+    // Start Breenish shell
+    print!("[init] Starting /bin/bsh...\n");
+    let mut shell_pid = spawn(SHELL_PATH, "bsh");
 
     // Main loop: reap zombies and respawn crashed services
     let mut status: i32 = 0;
@@ -56,7 +56,7 @@ fn main() {
                     if reaped == shell_pid {
                         // Shell exited -- respawn it
                         print!("[init] Shell exited, respawning...\n");
-                        shell_pid = spawn(SHELL_PATH, "init_shell");
+                        shell_pid = spawn(SHELL_PATH, "bsh");
                     } else if reaped == telnetd_pid {
                         // Telnetd crashed -- respawn it
                         print!("[init] telnetd exited, respawning...\n");

userspace/programs/src/telnetd.rs

@@ -14,7 +14,7 @@ use libbreenix::socket::{socket, bind_inet, listen, accept, SockAddrIn, AF_INET,
 use libbreenix::types::Fd;
 
 const TELNET_PORT: u16 = 2323;
-const SHELL_PATH: &[u8] = b"/bin/init_shell\0";
+const SHELL_PATH: &[u8] = b"/bin/bsh\0";
 
 // setsockopt constants (not yet in libbreenix)
 const SOL_SOCKET: i32 = 1;