feat: migrate ssh menu to Bun/TypeScript

Replace the Bash implementation and jq/yq dependency chain with a Bun-based TypeScript script, add Bun/TypeScript project files, and update docs and sample config notes to match the new CLI and behavior.

README.md

@@ -1,6 +1,6 @@
 # mtm-ssh-menu
 
-A Bash SSH target picker built around `fzf` and YAML configuration.
+A Bun/TypeScript SSH target picker built around `fzf` and YAML configuration.
 
 ## What it does
 
@@ -14,10 +14,9 @@ A Bash SSH target picker built around `fzf` and YAML configuration.
 
 ## Requirements
 
+- `bun`
 - `ssh`
 - `fzf`
-- `jq`
-- `yq`
 
 ## Usage
 
@@ -25,11 +24,14 @@ A Bash SSH target picker built around `fzf` and YAML configuration.
 ./mtm-ssh-menu [--config-dir DIR] [-k [user]]
 ```
 
+The usage shown by the script is `sshm [--config-dir DIR] [-k [user]]`.
+
 Options:
 
 - `-h`, `--help`: show help
-- `--config-dir DIR`: use a custom configuration directory
-- `-k`, `--known-hosts [user]`: include hosts from `~/.ssh/known_hosts`
+- `-c`, `--config-dir DIR`: use a custom configuration directory
+- `-k`, `--known-hosts [user]`: include hosts from `~/.ssh/known_hosts` and optionally set the user
+- When `-k` is used without a user, the selected entry uses `root`
 
 By default, the script reads configuration from:
 
@@ -47,14 +49,56 @@ ssh:
   default_options: ""
   jump_hosts:
     office: "user@192.168.10.11"
-    office-alt: "user@192.168.10.11:2222"
-
+    dev: "user@192.168.10.11:2222"
+    backup: "admin@10.0.0.5:2200"
 ```
 
 ### `hosts/01_prod.yaml`
 
 ```yaml
 group: prod
+servers:
+  - name: web-1
+    aliases:
+      - frontend
+      - web
+    host: web-1.prod.internal
+    jump_host: office
+
+  - name: db-1
+    aliases:
+      - database
+      - sql
+    host: 10.0.0.20
+    jump_host: office
+```
+
+### `hosts/02_staging.yaml`
+
+```yaml
+group: staging
+servers:
+  - name: app-1
+    aliases:
+      - app
+      - application
+    host: staging-app.example.com
+    user: ubuntu
+    port: 22
+    ssh_options: ""
+
+  - name: worker-1
+    aliases:
+      - worker
+    host: 10.20.0.15
+    user: ubuntu
+    port: 22
+```
+
+### `hosts/03_dev.yaml`
+
+```yaml
+group: dev
 servers:
   - name: api-1
     aliases:
@@ -73,22 +117,9 @@ servers:
     port: 22
 ```
 
-### `hosts/03_dev.yaml`
-
-```yaml
-group: dev
-servers:
-  - name: web-1
-    aliases:
-      - frontend
-      - web
-    host: web-1.prod.internal
-    jump_host: office
-```
-
 The file name does not need to match the `group` value. The script reads the `group` from the YAML content and uses the file path internally to load the selected host.
 
-The sample configuration now uses numbered file names such as `01_prod.yaml`, `02_staging.yaml`, and `03_dev.yaml`.
+The sample configuration uses numbered file names: `01_prod.yaml`, `02_staging.yaml`, and `03_dev.yaml`.
 
 Each host entry can define:
 
@@ -108,11 +139,13 @@ A complete sample configuration is available in `sample-config/`.
 - `jump_host` values are resolved by name from `global.yaml`.
 - Jump hosts support `user@host` and `user@host:port`; if the port is omitted, `22` is used.
 - If a host does not define a user or port, global defaults are used.
-- `default_options` is present in the config but not consumed by the current script.
-- The sample config includes `ssh_options` in one file, but the current script does not consume it yet.
+- `default_options` is consumed for hosts that do not define their own `options`, and is appended as raw SSH options.
+- `ssh_options` appears in the sample config but is not used by the current script; only `options` is read.
 - Sample host examples are stored as `sample-config/hosts/01_prod.yaml`, `02_staging.yaml`, and `03_dev.yaml`.
 - The `group` key is required for each host config file; the file name is only an internal storage detail.
 - When `-k` is used, entries from `known_hosts` are shown with the selected user or `root` by default.
+- Known-host entries always use port `22`.
 - `known_hosts` entries use port `22`.
-- The script uses strict Bash mode (`set -euo pipefail`).
+- The script is implemented in Bun and launches `fzf` plus `ssh` from a parsed YAML configuration.
+- The current implementation builds the final SSH command as a string and executes it through Bun.
 - The script name shown in usage is `sshm`, while the repository file is `mtm-ssh-menu`.