feat: complete Rust-to-Go rewrite with Bubbletea v2

Rewrites oxker from Rust/ratatui to Go/Bubbletea, migrated to the
Bubbletea v2 API (charm.land/bubbletea/v2). Removes all original Rust
source files and legacy Go modules (internal/ui, internal/input, bubbles).

Key changes:
- View() returns tea.View with declarative AltScreen and MouseMode
- KeyMsg → KeyPressMsg, MouseMsg → MouseClickMsg/WheelMsg/MotionMsg/ReleaseMsg
- execWriteKey rewritten for v2 key fields (Code/Mod/Text)
- Mouse toggle via View field instead of imperative commands
- Filter/search text input uses msg.Text for v2 space key compat

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/docker/client.go

@@ -0,0 +1,112 @@
+package docker
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/client"
+)
+
+type Client struct {
+	cli    *client.Client
+	ctx    context.Context
+	cancel context.CancelFunc
+}
+
+func New(host ...string) (*Client, error) {
+	opts := []client.Opt{client.FromEnv, client.WithAPIVersionNegotiation()}
+	if len(host) > 0 && host[0] != "" {
+		opts = append(opts, client.WithHost(host[0]))
+	}
+	cli, err := client.NewClientWithOpts(opts...)
+	if err != nil {
+		return nil, err
+	}
+	ctx, cancel := context.WithCancel(context.Background())
+	return &Client{cli: cli, ctx: ctx, cancel: cancel}, nil
+}
+
+// Cancel cancels all in-flight Docker API calls.
+func (c *Client) Cancel() {
+	c.cancel()
+}
+
+func (c *Client) Ping() error {
+	_, err := c.cli.Ping(c.ctx)
+	return err
+}
+
+func (c *Client) ListContainers(all bool) ([]types.Container, error) {
+	opts := container.ListOptions{All: all}
+	return c.cli.ContainerList(c.ctx, opts)
+}
+
+func (c *Client) InspectContainer(id string) (types.ContainerJSON, error) {
+	return c.cli.ContainerInspect(c.ctx, id)
+}
+
+func (c *Client) StartContainer(id string) error {
+	return c.cli.ContainerStart(c.ctx, id, container.StartOptions{})
+}
+
+func (c *Client) StopContainer(id string) error {
+	return c.cli.ContainerStop(c.ctx, id, container.StopOptions{})
+}
+
+func (c *Client) RestartContainer(id string) error {
+	return c.cli.ContainerRestart(c.ctx, id, container.StopOptions{})
+}
+
+func (c *Client) DeleteContainer(id string, force bool) error {
+	return c.cli.ContainerRemove(c.ctx, id, container.RemoveOptions{Force: force})
+}
+
+func (c *Client) PauseContainer(id string) error {
+	return c.cli.ContainerPause(c.ctx, id)
+}
+
+func (c *Client) UnpauseContainer(id string) error {
+	return c.cli.ContainerUnpause(c.ctx, id)
+}
+
+func (c *Client) Logs(id string, options container.LogsOptions) (io.ReadCloser, error) {
+	return c.cli.ContainerLogs(c.ctx, id, options)
+}
+
+// ContainerStats gets a single stats snapshot for a container.
+// Uses stream=false (NOT one-shot) so Docker fills in precpu_stats for accurate CPU delta.
+func (c *Client) ContainerStats(id string) (*container.StatsResponse, error) {
+	resp, err := c.cli.ContainerStats(c.ctx, id, false)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	var stats container.StatsResponse
+	if err := json.NewDecoder(resp.Body).Decode(&stats); err != nil {
+		return nil, err
+	}
+	return &stats, nil
+}
+
+func (c *Client) ContainerExec(id string, cmd []string, tty bool) (types.HijackedResponse, error) {
+	execConfig := container.ExecOptions{
+		Cmd:          cmd,
+		Tty:          tty,
+		AttachStdin:  true,
+		AttachStdout: true,
+		AttachStderr: true,
+	}
+	exec, err := c.cli.ContainerExecCreate(c.ctx, id, execConfig)
+	if err != nil {
+		return types.HijackedResponse{}, err
+	}
+	return c.cli.ContainerExecAttach(c.ctx, exec.ID, container.ExecStartOptions{})
+}
+
+func (c *Client) Close() error {
+	return c.cli.Close()
+}