feat(cli): v2 — full API coverage, profiles, --json/--yes, containr up

Rewrite the CLI as a thin client over the authenticated API so agents
and scripts reach every resource the UI does (ROADMAP2 phase A2).

- shared Client with bearer auth, error-envelope decoding, and stable
  exit codes: 0 ok / 1 error / 2 auth / 3 not-found / 4 validation /
  5 unreachable
- named profiles in ~/.containr.yaml (current_profile + profiles.*);
  resolution order --flag > env > profile > localhost default;
  CONTAINR_TOKEN / CONTAINR_API_URL / CONTAINR_PROFILE env support
- --json prints raw API responses; --yes skips confirmations;
  destructive commands refuse non-interactively without it
- auth login verifies the token against /user/profile before saving,
  interactive prompt via term.ReadPassword
- commands for every resource: tokens, projects, services, deploy,
  deployments (logs/rollback), logs --follow (SSE), exec, variables
  (set/unset merge with secret masking preserved), databases
  (backup/restore/download), cron, templates, nodes + agent tokens,
  scaling, ha, security, gateway, admin, notifications
- containr up: git remote + branch → create-or-reuse service → deploy

Verified live: login/status/tokens/projects/services, up creating a
service + deployment, non-TTY confirmation refusal, scope-capped admin
rejection (exit 2), revoke.

Authored By: TDvorak <[email protected]>

app/backend/internal/cli/commands/helpers.go

@@ -0,0 +1,113 @@
+package commands
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+// client returns an authenticated API client or an ExitAuth error.
+func client() (*Client, error) {
+	c := NewClient()
+	if err := c.RequireAuth(); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+// unwrapList accepts both top-level arrays and {"<key>": [...]} envelopes,
+// which the Containr API uses inconsistently between endpoints.
+func unwrapList(data []byte, keys ...string) ([]map[string]interface{}, error) {
+	var arr []map[string]interface{}
+	if err := json.Unmarshal(data, &arr); err == nil {
+		return arr, nil
+	}
+	var obj map[string]json.RawMessage
+	if err := json.Unmarshal(data, &obj); err != nil {
+		return nil, fmt.Errorf("unexpected response shape: %w", err)
+	}
+	for _, k := range keys {
+		if raw, ok := obj[k]; ok {
+			if err := json.Unmarshal(raw, &arr); err != nil {
+				return nil, fmt.Errorf("cannot decode %q: %w", k, err)
+			}
+			return arr, nil
+		}
+	}
+	return []map[string]interface{}{}, nil
+}
+
+func unwrapObject(data []byte, keys ...string) (map[string]interface{}, error) {
+	var obj map[string]interface{}
+	if err := json.Unmarshal(data, &obj); err != nil {
+		return nil, fmt.Errorf("unexpected response shape: %w", err)
+	}
+	for _, k := range keys {
+		if inner, ok := obj[k].(map[string]interface{}); ok {
+			return inner, nil
+		}
+	}
+	return obj, nil
+}
+
+// str extracts a display string from a response map.
+func str(m map[string]interface{}, keys ...string) string {
+	for _, k := range keys {
+		if v, ok := m[k]; ok && v != nil {
+			switch t := v.(type) {
+			case string:
+				return t
+			case float64:
+				if t == float64(int64(t)) {
+					return fmt.Sprintf("%d", int64(t))
+				}
+				return fmt.Sprintf("%v", t)
+			case bool:
+				return fmt.Sprintf("%t", t)
+			}
+		}
+	}
+	return "-"
+}
+
+func shortID(m map[string]interface{}) string {
+	id := str(m, "id")
+	if len(id) > 8 {
+		return id[:8]
+	}
+	return id
+}
+
+func relTime(m map[string]interface{}, keys ...string) string {
+	for _, k := range keys {
+		s, ok := m[k].(string)
+		if !ok || s == "" {
+			continue
+		}
+		t, err := time.Parse(time.RFC3339Nano, s)
+		if err != nil {
+			return s
+		}
+		d := time.Since(t)
+		switch {
+		case d < time.Minute:
+			return "just now"
+		case d < time.Hour:
+			return fmt.Sprintf("%dm ago", int(d.Minutes()))
+		case d < 24*time.Hour:
+			return fmt.Sprintf("%dh ago", int(d.Hours()))
+		default:
+			return fmt.Sprintf("%dd ago", int(d.Hours()/24))
+		}
+	}
+	return "-"
+}
+
+// printRows renders a table, or raw JSON for the full response in --json mode.
+func printRows(raw []byte, headers []string, rows [][]string) {
+	if JSONMode() {
+		PrintRaw(raw)
+		return
+	}
+	PrintTable(headers, rows)
+}