diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 19fb2134f9..9bcb951ee5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -639,6 +639,38 @@ jobs:
           if-no-files-found: ignore
           retention-days: 7
 
+      - name: test (Windows explicit skill root budget)
+        if: env.RUN_STEPS == 'true' && runner.os == 'Windows' && github.event_name == 'pull_request'
+        timeout-minutes: 5
+        shell: bash
+        run: |
+          set -o pipefail
+          go test -count=1 -timeout=3m -json -run '^(TestProfileRootBudgetLifetime|TestProfileBudgetPreparationUsesTurnAdmission|TestEffectExplicitSkillRootBudget)$' ./internal/session/control ./internal/assembly/boot | tee "$RUNNER_TEMP/explicit-skill-root-budget.jsonl"
+          jq -se '
+            [.[] | select(.Test == null and .Action == "pass") | .Package] as $packages |
+            [.[] | select(.Test != null and .Action == "pass") | .Test] as $tests |
+            all(.[]; .Action != "skip" and .Action != "fail") and
+            (["reasonix/internal/session/control", "reasonix/internal/assembly/boot"] - $packages | length) == 0 and
+            (["TestProfileRootBudgetLifetime", "TestProfileRootBudgetLifetime/new_task",
+              "TestProfileRootBudgetLifetime/same_scope", "TestProfileRootBudgetLifetime/new_scope",
+              "TestProfileRootBudgetLifetime/reset", "TestProfileRootBudgetLifetime/new_session",
+              "TestProfileRootBudgetLifetime/inherited", "TestProfileRootBudgetLifetime/context_zero",
+              "TestProfileBudgetPreparationUsesTurnAdmission", "TestEffectExplicitSkillRootBudget",
+              "TestEffectExplicitSkillRootBudget/profile", "TestEffectExplicitSkillRootBudget/preview",
+              "TestEffectExplicitSkillRootBudget/slash", "TestEffectExplicitSkillRootBudget/chips",
+              "TestEffectExplicitSkillRootBudget/goal", "TestEffectExplicitSkillRootBudget/context_zero",
+              "TestEffectExplicitSkillRootBudget/unconfigured"] - $tests | length) == 0
+          ' "$RUNNER_TEMP/explicit-skill-root-budget.jsonl"
+
+      - name: upload Windows explicit skill root budget inventory
+        if: always() && env.RUN_STEPS == 'true' && runner.os == 'Windows' && github.event_name == 'pull_request'
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7
+        with:
+          name: explicit-skill-root-budget-windows-${{ github.run_attempt }}
+          path: ${{ runner.temp }}/explicit-skill-root-budget.jsonl
+          if-no-files-found: ignore
+          retention-days: 7
+
       - name: test (Windows root triage budget)
         if: env.RUN_STEPS == 'true' && runner.os == 'Windows' && github.event_name == 'pull_request'
         timeout-minutes: 5
diff --git a/docs/EXPLICIT_SKILL_ROOT_BUDGET.md b/docs/EXPLICIT_SKILL_ROOT_BUDGET.md
new file mode 100644
index 0000000000..608d0192e3
--- /dev/null
+++ b/docs/EXPLICIT_SKILL_ROOT_BUDGET.md
@@ -0,0 +1,79 @@
+---
+owner: @SivanCola
+backup: @esengine
+status: active
+reviewed: 2026-10-27
+---
+
+# Explicit skill root budget / 显式技能根预算
+
+## Behavior / 行为
+
+Explicit subagent slash commands and composer selections share the executor's
+existing token/wall root. Preparation occurs after checkpoint and blocking
+prompt hooks. An active Goal uses its existing budget and usage recorder.
+
+显式子代理 slash 命令和 composer 选择共享 executor 已有的 token/wall 根预算。
+在检查点及可阻止提交的 hook 之后准备；活跃 Goal 使用已有预算和用量 recorder。
+
+Synchronous CLI profile run and preview use the Controller's existing blocking
+turn admission before root preparation. Busy, closed and draining controllers
+refuse entry; Controller cancellation reaches the admitted profile. Existing
+workspace activity and write-authority checks now apply to this entry too.
+
+同步 CLI profile run 和 preview 在准备根预算前走 Controller 已有同步准入。
+忙碌、关闭或 draining 时拒绝进入；Controller 取消传给已准入的 profile。
+这一入口也遵守已有工作区活动和写入 authority 检查。
+
+## Lifetime and limits / 生命周期与边界
+
+Same delivery scope retains accumulated spend. New tasks, sessions, scope IDs
+and explicit budget resets start a fresh root. An inherited root remains the
+owner; projecting an old context into a job retains the old counter without
+copying its cancellation. Multiple selected skills share one root.
+
+同 delivery scope 保留累计用量；新任务、session、scope ID 和显式预算 reset
+开始新根。继承的根保持所有权；旧 context 投射给 job 保留旧计数但不复制取消。
+一次选择的多个技能共享同一根。
+
+Zero remains unlimited, including an explicit context override. Checks are
+cooperative after tools and keep existing finalization.
+
+A paused child returns
+its existing typed error; subsequent selected skills are not started after
+that error. A later child may still perform its first tool round on an already
+spent root. This is not request admission or a hard reservation.
+
+零额度仍不限，包括显式 context 覆盖。在工具后协作检查并保留已有收尾。
+暂停的 child 返回已有类型化错误，之后的选中技能不再启动；后续 child 仍可能
+在已耗尽的根上执行首个工具轮。这不是请求准入或硬预留。
+
+The clock starts at preparation, not boot or earlier queueing. Local Agent
+budgets remain stricter independent gates. Money, durable recovery, all
+auxiliary consumers and physical process quiescence remain separate work.
+
+时钟从准备根开始，不含 boot 或更早排队。Agent 本地额度仍是独立的更严格 gate。
+金额、持久恢复、全部辅助消费者及物理进程静默仍是独立工作。
+
+## Evidence / 证据
+
+Boot HTTP/SSE tests exercise profile, preview, slash, composer multi-selection
+and Goal against real file reads. Zero configuration and explicit zero remain
+controls.
+
+Real Controller/Agent sequences cover root lifetime, old job
+projection and cancellation/admission. These are constructed local tests, not
+an observed production incident, frontend interaction or restart proof.
+
+Boot HTTP/SSE 测试通过真实文件读取覆盖 profile、preview、slash、composer
+多选和 Goal，保留零配置与显式零值对照。真实 Controller/Agent 序列覆盖根寿命、
+旧 job 投射及取消/准入。这些是本机构造测试，不是线上事故、前端交互或重启证明。
+
+No new API, configuration, wire or persisted schema is introduced. Model
+selection, tool permissions and request construction stay with their owners.
+The HTTP fixture checks stable child prefix/schema bytes within a run; it does
+not measure live provider cache hit rate. The complete #14025 plan remains open.
+
+没有新增 API、配置、传输或持久化 schema。模型选择、工具权限和请求构造保留
+原有 owner。HTTP 夹具只核对同轮 child 前缀/schema 字节稳定，不测线上缓存命中率。
+完整 #14025 计划仍未闭环。
diff --git a/internal/assembly/boot/effect_skill_root_budget_test.go b/internal/assembly/boot/effect_skill_root_budget_test.go
new file mode 100644
index 0000000000..51ef252450
--- /dev/null
+++ b/internal/assembly/boot/effect_skill_root_budget_test.go
@@ -0,0 +1,183 @@
+package boot
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"reasonix/internal/contract/event"
+	"reasonix/internal/runtime/agent"
+	"reasonix/internal/session/control"
+)
+
+func TestEffectExplicitSkillRootBudget(t *testing.T) {
+	for _, tc := range []struct {
+		name      string
+		limit     int
+		wantReads int32
+	}{
+		{"profile", 1500, 2},
+		{"preview", 1500, 2},
+		{"slash", 1500, 2},
+		{"chips", 3000, 2},
+		{"goal", 0, 2},
+		{"context_zero", 1500, 3},
+		{"unconfigured", 0, 3},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			home, root := statedBootHome(t), t.TempDir()
+			writeFile(t, root, "fixture.txt", "explicit skill budget fixture")
+			for _, name := range []string{"probe", "second"} {
+				writeFile(t, home, "skills/"+name+"/SKILL.md", "---\nname: "+name+"\ndescription: Read the fixture\nrunAs: subagent\nread-only: true\nallowed-tools: read_file\nmodel: "+name+"\n---\nRead fixture.txt and report it.\n")
+			}
+			var calls [2]atomic.Int32
+			var reads, receipts atomic.Int32
+			var observed sync.Map
+			var prefixes sync.Map
+			srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				var req struct {
+					Model    string
+					Tools    []json.RawMessage
+					Messages []struct {
+						Role       string
+						Content    json.RawMessage
+						ToolCallID string `json:"tool_call_id"`
+					}
+				}
+				if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+					t.Error(err)
+					w.WriteHeader(http.StatusBadRequest)
+					return
+				}
+				for _, message := range req.Messages {
+					if message.Role == "tool" && strings.Contains(string(message.Content), "explicit skill budget fixture") {
+						if _, loaded := observed.LoadOrStore(message.ToolCallID, true); !loaded {
+							reads.Add(1)
+						}
+					}
+				}
+				if len(req.Tools) > 0 && len(req.Messages) > 0 {
+					stable, _ := json.Marshal(struct {
+						Prefix json.RawMessage
+						Tools  []json.RawMessage
+					}{req.Messages[0].Content, req.Tools})
+					previous, loaded := prefixes.LoadOrStore(req.Model, stable)
+					if loaded && !bytes.Equal(previous.([]byte), stable) {
+						t.Error("child prefix/schema changed")
+					}
+				}
+				i := 0
+				if req.Model == "second" {
+					i = 1
+				}
+				n := calls[i].Add(1)
+				w.Header().Set("Content-Type", "text/event-stream")
+				maxReads := int32(3)
+				if tc.name == "chips" && i == 0 {
+					maxReads = 1
+				}
+				if len(req.Tools) > 0 && n <= maxReads {
+					args, _ := json.Marshal(map[string]string{"path": "fixture.txt"})
+					payload, _ := json.Marshal(map[string]any{"choices": []any{map[string]any{"delta": map[string]any{"tool_calls": []any{map[string]any{"index": 0, "id": fmt.Sprintf("read-%d-%d", i, n), "type": "function", "function": map[string]any{"name": "read_file", "arguments": string(args)}}}}, "finish_reason": "tool_calls"}}})
+					_, _ = fmt.Fprintf(w, "data: %s\n\n", payload)
+				} else {
+					_, _ = io.WriteString(w, "data: {\"choices\":[{\"delta\":{\"content\":\"Fixture read complete.\"},\"finish_reason\":\"stop\"}]}\n\n")
+				}
+				_, _ = io.WriteString(w, "data: {\"choices\":[],\"usage\":{\"prompt_tokens\":1000,\"completion_tokens\":100,\"total_tokens\":1100}}\n\ndata: [DONE]\n\n")
+			}))
+			t.Cleanup(srv.Close)
+			goalLimit := 0
+			if tc.name == "goal" {
+				goalLimit = 1500
+			}
+			writeFile(t, root, "reasonix.toml", fmt.Sprintf(`default_model = "probe"
+[agent]
+task_token_budget = %d
+goal_token_budget = %d
+[codegraph]
+enabled = false
+[[providers]]
+name = "probe"
+kind = "openai"
+model = "probe"
+base_url = %q
+api_key_env = "SKILL_ROOT_EFFECT_KEY"
+[[providers]]
+name = "second"
+kind = "openai"
+model = "second"
+base_url = %q
+api_key_env = "SKILL_ROOT_EFFECT_KEY"
+`, tc.limit, goalLimit, srv.URL, srv.URL))
+			t.Setenv("SKILL_ROOT_EFFECT_KEY", "test")
+			approveWorkspaceAt(t, home, root)
+			done := make(chan struct{}, 1)
+			ctrl, err := Build(t.Context(), Options{Home: home, WorkspaceRoot: root, Sink: event.FuncSink(func(e event.Event) {
+				if e.Kind == event.Usage && e.UsageSource == event.UsageSourceSubagent {
+					receipts.Add(1)
+					if e.Usage == nil || e.Usage.RequestCount != 1 || e.Usage.Estimated {
+						t.Errorf("usage=%+v", e.Usage)
+					}
+				}
+				if e.Kind == event.TurnDone {
+					select {
+					case done <- struct{}{}:
+					default:
+					}
+				}
+			})})
+			if err != nil {
+				t.Fatal(err)
+			}
+			t.Cleanup(ctrl.Close)
+			ctrl.EnsureSessionPath()
+			ctrl.SetToolApprovalMode(control.ToolApprovalYolo)
+			ctx := t.Context()
+			if tc.name == "context_zero" {
+				ctx = agent.WithTaskBudget(ctx, agent.TaskBudget{})
+			}
+			switch tc.name {
+			case "slash":
+				ctrl.Submit("/probe read the fixture")
+			case "goal":
+				ctrl.SetGoal("Read the fixture")
+				ctrl.Submit("/probe read the fixture")
+			case "chips":
+				ctrl.SubmitInvocationDisplay("/probe /second read the fixture", "read the fixture", []control.InvocationRequest{{Name: "probe", Kind: "subagent"}, {Name: "second", Kind: "subagent"}})
+			default:
+				_, err = ctrl.RunSubagentProfile(ctx, "probe", "read the fixture", tc.name == "preview")
+				if tc.limit > 0 && tc.name != "context_zero" {
+					if pause, ok := agent.InspectRunPause(err); !ok || pause.Key != "token" {
+						t.Fatalf("pause=%+v err=%v", pause, err)
+					}
+				} else if err != nil {
+					t.Fatal(err)
+				}
+			}
+			if tc.name == "slash" || tc.name == "chips" || tc.name == "goal" {
+				select {
+				case <-done:
+				case <-time.After(30 * time.Second):
+					t.Fatal("skill turn did not finish")
+				}
+			}
+			if tc.name == "goal" && ctrl.GoalStatus() != control.GoalStatusBlocked {
+				t.Errorf("goal status=%s", ctrl.GoalStatus())
+			}
+			if reads.Load() != tc.wantReads {
+				t.Errorf("real reads=%d, want %d; HTTP=%d/%d", reads.Load(), tc.wantReads, calls[0].Load(), calls[1].Load())
+			}
+			if (tc.name == "slash" || tc.name == "chips") && receipts.Load() != calls[0].Load()+calls[1].Load() {
+				t.Errorf("receipts=%d HTTP=%d/%d", receipts.Load(), calls[0].Load(), calls[1].Load())
+			}
+		})
+	}
+}
diff --git a/internal/session/control/skill_root_budget_test.go b/internal/session/control/skill_root_budget_test.go
new file mode 100644
index 0000000000..1baeab3939
--- /dev/null
+++ b/internal/session/control/skill_root_budget_test.go
@@ -0,0 +1,139 @@
+package control
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"path/filepath"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"reasonix/internal/contract/event"
+	"reasonix/internal/contract/provider"
+	"reasonix/internal/contract/tool"
+	"reasonix/internal/ext/skill"
+	"reasonix/internal/runtime/agent"
+	"reasonix/internal/runtime/agent/testutil"
+	"reasonix/internal/state/sessionstore"
+)
+
+func TestProfileRootBudgetLifetime(t *testing.T) {
+	for _, mode := range []string{"new_task", "same_scope", "new_scope", "reset", "new_session", "inherited", "context_zero"} {
+		t.Run(mode, func(t *testing.T) {
+			parent := agent.New(nil, tool.NewRegistry(), sessionstore.NewSession("parent"), agent.Options{TaskBudget: agent.TaskBudget{Tokens: 1500}}, event.Discard)
+			var reads int
+			var oldContext context.Context
+			runner := func(ctx context.Context, _ skill.Skill, task string, _ skill.SubagentRunOptions) (string, error) {
+				oldContext = ctx
+				reg := tool.NewRegistry()
+				reg.Add(fakeControlTool{name: "read_file"})
+				var turns []testutil.Turn
+				for i := range 3 {
+					turns = append(turns, testutil.Turn{ToolCalls: []provider.ToolCall{{ID: fmt.Sprintf("read-%d", i), Name: "read_file", Arguments: `{}`}}, Usage: &provider.Usage{PromptTokens: 1000, CompletionTokens: 100, RequestCount: 1}})
+				}
+				turns = append(turns, testutil.Turn{Text: "done"})
+				child := agent.New(testutil.NewMock("child", turns...), reg, sessionstore.NewSession("child"), agent.Options{}, event.FuncSink(func(e event.Event) {
+					if e.Kind == event.ToolResult && e.Tool.Name == "read_file" && e.Tool.Err == "" {
+						reads++
+					}
+				}))
+				err := child.Run(ctx, task)
+				if _, paused := agent.InspectRunPause(err); paused {
+					err = nil
+				}
+				return "done", err
+			}
+			dir := t.TempDir()
+			c := New(Options{Runner: parent, Executor: parent, SkillRunner: runner, SessionDir: dir, SessionPath: filepath.Join(dir, "s.jsonl"), Skills: []skill.Skill{{Name: "probe", RunAs: skill.RunSubagent}}})
+			t.Cleanup(c.Close)
+			ctx := t.Context()
+			if mode != "new_task" && mode != "context_zero" {
+				ctx = agent.WithDeliveryExecutionScope(ctx, agent.DeliveryExecutionScope{ID: "one", TaskText: "read"})
+			}
+			if mode == "inherited" {
+				owner := agent.New(nil, tool.NewRegistry(), sessionstore.NewSession("outer"), agent.Options{TaskBudget: agent.TaskBudget{Tokens: 1500}}, event.Discard)
+				ctx = owner.PrepareRootTaskBudget(ctx)
+			}
+			if mode == "context_zero" {
+				ctx = agent.WithTaskBudget(ctx, agent.TaskBudget{})
+			}
+			if _, err := c.RunSubagentProfile(ctx, "probe", "read", false); err != nil {
+				t.Fatal(err)
+			}
+			first := reads
+			wantFirst, wantSecond := 2, 2
+			if mode == "same_scope" || mode == "inherited" {
+				wantSecond = 1
+			}
+			switch mode {
+			case "new_scope":
+				ctx = agent.WithDeliveryExecutionScope(ctx, agent.DeliveryExecutionScope{ID: "two", TaskText: "next"})
+			case "reset":
+				parent.ResetTaskBudget()
+			case "new_session":
+				parent.SetSession(sessionstore.NewSession("new"))
+			case "context_zero":
+				wantFirst, wantSecond = 3, 3
+			}
+			old := oldContext
+			if _, err := c.RunSubagentProfile(ctx, "probe", "next", false); err != nil {
+				t.Fatal(err)
+			}
+			if first != wantFirst || reads-first != wantSecond {
+				t.Fatalf("reads=%d/%d want=%d/%d", first, reads-first, wantFirst, wantSecond)
+			}
+			if mode == "reset" {
+				// A projected managed job has independent cancellation but retains its old spend.
+				jobCtx := agent.InheritRootTokenBudget(t.Context(), old)
+				before := reads
+				if _, err := runner(jobCtx, skill.Skill{}, "old job", skill.SubagentRunOptions{}); err != nil {
+					t.Fatal(err)
+				}
+				if reads-before != 1 {
+					t.Fatalf("old job reads=%d", reads-before)
+				}
+			}
+		})
+	}
+}
+
+func TestProfileBudgetPreparationUsesTurnAdmission(t *testing.T) {
+	entered, release := make(chan struct{}), make(chan struct{})
+	var calls atomic.Int32
+	parent := agent.New(nil, tool.NewRegistry(), sessionstore.NewSession("parent"), agent.Options{}, event.Discard)
+	c := New(Options{Runner: parent, Executor: parent, Skills: []skill.Skill{{Name: "probe", RunAs: skill.RunSubagent}}, SkillRunner: func(ctx context.Context, _ skill.Skill, _ string, _ skill.SubagentRunOptions) (string, error) {
+		if calls.Add(1) != 1 {
+			return "unexpected concurrent run", nil
+		}
+		close(entered)
+		select {
+		case <-ctx.Done():
+			return "", ctx.Err()
+		case <-release:
+			return "released", nil
+		}
+	}})
+	t.Cleanup(c.Close)
+	defer close(release)
+	done := make(chan error, 1)
+	go func() { _, err := c.RunSubagentProfile(t.Context(), "probe", "first", false); done <- err }()
+	select {
+	case <-entered:
+	case <-time.After(5 * time.Second):
+		t.Fatal("runner did not enter")
+	}
+	_, second := c.RunSubagentProfile(t.Context(), "probe", "second", false)
+	if !errors.Is(second, ErrTurnRunning) || calls.Load() != 1 {
+		t.Errorf("second=%v calls=%d", second, calls.Load())
+	}
+	c.Cancel()
+	select {
+	case err := <-done:
+		if !errors.Is(err, context.Canceled) {
+			t.Errorf("cancel=%v", err)
+		}
+	case <-time.After(5 * time.Second):
+		t.Error("controller cancellation did not reach profile")
+	}
+}
diff --git a/internal/session/control/turn_entry.go b/internal/session/control/turn_entry.go
index fb48259edd..7237534a67 100644
--- a/internal/session/control/turn_entry.go
+++ b/internal/session/control/turn_entry.go
@@ -297,15 +297,21 @@ func (c *Controller) RunSubagentProfile(ctx context.Context, name, task string,
 		return "", fmt.Errorf("subagent skill runner is unavailable for %q", name)
 	}
 
-	c.maybeSessionStart(ctx)
-	parentSession := c.parentSessionID()
-	ctx = agent.WithParentSession(ctx, parentSession)
-	ctx = jobs.WithSession(ctx, parentSession)
-	ctx, turnImgs := c.withTurnImages(ctx, task)
-	ctx = langpref.WithResponseLanguagePreference(ctx, c.display.responseLanguage)
-	ctx = langpref.WithReasoningLanguagePreference(ctx, c.display.reasoningLanguage)
-	ctx = agent.WithSubagentDepth(ctx, 0)
-	answer, err := runner(ctx, sk, c.imageRoutingPrefix(turnImgs)+task, skill.SubagentRunOptions{HostInitiated: true})
+	var answer string
+	err := c.runSynchronousTurn(ctx, nil, func(ctx context.Context) error {
+		c.maybeSessionStart(ctx)
+		parentSession := c.parentSessionID()
+		ctx = agent.WithParentSession(ctx, parentSession)
+		ctx = jobs.WithSession(ctx, parentSession)
+		ctx, turnImgs := c.withTurnImages(ctx, task)
+		ctx = langpref.WithResponseLanguagePreference(ctx, c.display.responseLanguage)
+		ctx = langpref.WithReasoningLanguagePreference(ctx, c.display.reasoningLanguage)
+		ctx = agent.WithSubagentDepth(ctx, 0)
+		ctx = c.prepareTurnRootBudget(ctx)
+		var err error
+		answer, err = runner(ctx, sk, c.imageRoutingPrefix(turnImgs)+task, skill.SubagentRunOptions{HostInitiated: true})
+		return err
+	})
 	if err != nil {
 		return "", err
 	}
diff --git a/internal/session/control/turn_orchestrator.go b/internal/session/control/turn_orchestrator.go
index 0de397328a..7c5025d1d2 100644
--- a/internal/session/control/turn_orchestrator.go
+++ b/internal/session/control/turn_orchestrator.go
@@ -82,13 +82,8 @@ func (o *turnOrchestrator) runSubagentSkillTurnsGoalLoop(ctx context.Context, sk
 	expectedContinuationEpoch := o.c.goals.continuationToken()
 	images := o.c.resolveTurnImages(raw)
 	ctx = o.c.withVisionRouting(agent.WithSubagentImageCandidates(ctx, images.candidates))
-	// The skill turn's model requests count against the active goal's token
-	// budget, so bind a recorder for the span even though the sub-agent cannot
-	// call update_goal itself.
 	if scopeID, goal, ok := o.c.goals.deliveryScope(); ok {
 		ctx = agent.WithDeliveryExecutionScope(ctx, agent.DeliveryExecutionScope{ID: scopeID, TaskText: goal})
-		recorder := o.c.goals.newTurnRecorder(scopeID, o.c.goals.continuationToken())
-		o.c.goalUsageTee.setActiveRecorder(recorder)
 	}
 	startMessages := o.c.sessionMessageCount()
 	err := o.runSubagentSkillTurns(ctx, skills, task, raw, display, runner, planMode, images)
@@ -151,6 +146,8 @@ func (o *turnOrchestrator) runSubagentSkillTurns(ctx context.Context, skills []s
 	}
 	ctx, marker = c.beginTurn(ctx, startMessages, true)
 	ctx = c.announceAuthoredTurn(ctx, firstNonEmpty(raw, task), startMessages)
+	ctx = c.bindTurnScope(ctx, nil)
+	ctx = c.prepareTurnRootBudget(ctx)
 	c.executor.LandAuthoredUserMessage(ctx, provider.Message{Role: provider.RoleUser, Content: input, Images: images.userImages, CreatedAt: time.Now().UnixMilli()})
 
 	for _, sk := range skills {
diff --git a/release-notes/studio/unreleased/14025-explicit-skill-root-budget.md b/release-notes/studio/unreleased/14025-explicit-skill-root-budget.md
new file mode 100644
index 0000000000..39e92b77ad
--- /dev/null
+++ b/release-notes/studio/unreleased/14025-explicit-skill-root-budget.md
@@ -0,0 +1,17 @@
+显式子代理技能调用遵守已有任务根预算。
+
+## 修复
+
+- slash、composer 多选及 Goal 技能调用共享已有 token/wall 根预算，保留零额度不限和原有收尾。关联 #14025。
+- CLI profile run/preview 复用同步回合准入及取消；忙碌、关闭、draining 和工作区 authority 检查同样适用。关联 #14025。
+- 本次不提供硬预留、根金额汇总或完整隔离恢复保障。关联 #14025。
+
+---
+
+<!-- lang:en -->
+
+## Fixed
+
+- Explicit slash, composer and Goal subagent skills share the existing token/wall root, preserving unlimited zero and finalization. Refs #14025.
+- CLI profile run/preview use synchronous turn admission and cancellation, including busy, closed, draining and workspace authority checks. Refs #14025.
+- Hard reservations, root money accounting and complete isolation/recovery remain outside this change. Refs #14025.