diff --git a/agent-run-gateway.mjs b/agent-run-gateway.mjs
index 596d10b..c9e8b1d 100644
--- a/agent-run-gateway.mjs
+++ b/agent-run-gateway.mjs
@@ -52,6 +52,8 @@ import {
 } from './chat-task-intent-config.mjs';
 import { extractAgentRunExperience } from './experience-extractor.mjs';
 import { executeRainPipeline, isRainModeMessage } from './rain-service/index.mjs';
+import { buildContextBudgetResolvedEvent, resolveContextBudgetMode } from './context-budget.mjs';
+import { buildHeadroomRunObservation, resolveHeadroomMode } from './memind-headroom-policy.mjs';
 
 const DEFAULT_RUN_RETRY_DELAYS_MS = [1500, 5000, 15000];
 const TERMINAL_STATUSES = new Set(['succeeded', 'failed']);
@@ -1946,6 +1948,11 @@ export function createAgentRunGateway({
         sessionId: row.agent_session_id ?? null,
       });
       await appendEvent(runId, 'intent_routed', routing);
+      if (resolveHeadroomMode() !== 'off') {
+        await appendEvent(runId, 'headroom_context_observed', buildHeadroomRunObservation({
+          skillId: routing?.suggestedSkill ?? routing?.suggested_skill ?? null,
+        }));
+      }
       if (routingDecision === CHAT_INTENT_ROUTE.AGENT && chatIntentRouter?.applyAgentOrchestration) {
         const grantedSkills = await resolveGrantedSkills(row.user_id);
         let goalContext = null;
@@ -1997,11 +2004,32 @@ export function createAgentRunGateway({
           }
         }
         if (!rainHandoff) {
+          let preparedContext = null;
+          if (
+            resolveContextBudgetMode() !== 'off' &&
+            chatIntentRouter?.prepareAgentOrchestrationContext
+          ) {
+            preparedContext = chatIntentRouter.prepareAgentOrchestrationContext(
+              userMessage,
+              routing,
+              {
+                grantedSkills,
+                memoryContext: agentMemoryContext,
+                goalContext,
+                runtimeContext,
+              },
+            );
+            const budgetEvent = buildContextBudgetResolvedEvent(preparedContext.budgetPlan);
+            if (budgetEvent) {
+              await appendEvent(runId, 'context_budget_resolved', budgetEvent);
+            }
+          }
           userMessage = chatIntentRouter.applyAgentOrchestration(userMessage, routing, {
             grantedSkills,
             memoryContext: agentMemoryContext,
             goalContext,
             runtimeContext,
+            preparedContext,
           });
         }
       }
diff --git a/chat-intent-router.mjs b/chat-intent-router.mjs
index 81e477e..6979022 100644
--- a/chat-intent-router.mjs
+++ b/chat-intent-router.mjs
@@ -9,6 +9,7 @@ import {
   isProductCampaignIntent,
   PAGE_DATA_COLLECT_SKILL_NAME,
 } from './chat-skills.mjs';
+import { applyContextBudgetToOrchestration } from './context-budget.mjs';
 import { isDirectChatSessionId } from './direct-chat-service.mjs';
 import {
   memoryLimitForIntervention,
@@ -1175,20 +1176,56 @@ export function buildAgentOrchestrationAgentText({
   return lines.join('\n');
 }
 
-export function applyAgentOrchestrationToUserMessage(
+export function prepareAgentOrchestrationContext(
   userMessage,
   classification,
   { grantedSkills = [], memoryContext = null, goalContext = null, runtimeContext = null } = {},
 ) {
   const displayText = messageDisplayText(userMessage);
   const skillPrompt = resolveSkillPrompt(classification?.suggestedSkill, grantedSkills, displayText);
-  const agentText = buildAgentOrchestrationAgentText({
-    displayText,
-    classification,
-    skillPrompt,
+  const budgeted = applyContextBudgetToOrchestration({
     memoryContext,
     goalContext,
     runtimeContext,
+    skillPrompt,
+    userTask: displayText,
+  });
+  return {
+    displayText,
+    classification,
+    skillPrompt: budgeted.skillPrompt,
+    memoryContext: budgeted.memoryContext,
+    goalContext: budgeted.goalContext,
+    runtimeContext: budgeted.runtimeContext,
+    budgetPlan: budgeted.plan,
+    budgetApplied: budgeted.applied,
+  };
+}
+
+export function applyAgentOrchestrationToUserMessage(
+  userMessage,
+  classification,
+  {
+    grantedSkills = [],
+    memoryContext = null,
+    goalContext = null,
+    runtimeContext = null,
+    preparedContext = null,
+  } = {},
+) {
+  const prepared = preparedContext ?? prepareAgentOrchestrationContext(userMessage, classification, {
+    grantedSkills,
+    memoryContext,
+    goalContext,
+    runtimeContext,
+  });
+  const agentText = buildAgentOrchestrationAgentText({
+    displayText: prepared.displayText,
+    classification: prepared.classification,
+    skillPrompt: prepared.skillPrompt,
+    memoryContext: prepared.memoryContext,
+    goalContext: prepared.goalContext,
+    runtimeContext: prepared.runtimeContext,
   });
   const content = Array.isArray(userMessage?.content)
     ? userMessage.content.map((item, index) => {
@@ -1200,7 +1237,7 @@ export function applyAgentOrchestrationToUserMessage(
     : [{ type: 'text', text: agentText }];
   const metadata = {
     ...(userMessage?.metadata ?? {}),
-    displayText: displayText || undefined,
+    displayText: prepared.displayText || undefined,
     chatIntentRoute: CHAT_INTENT_ROUTE.AGENT,
     chatIntentSource: classification?.source ?? null,
     userVisible: userMessage?.metadata?.userVisible ?? true,
@@ -1901,6 +1938,7 @@ export function createChatIntentRouter(options = {}) {
     classifySessionAction,
     resolveAgentMemoryContext,
     applyAgentOrchestration: applyAgentOrchestrationToUserMessage,
+    prepareAgentOrchestrationContext,
   };
 }
 
@@ -2005,5 +2043,6 @@ export function createManagedChatIntentRouter({
     },
 
     applyAgentOrchestration: applyAgentOrchestrationToUserMessage,
+    prepareAgentOrchestrationContext,
   };
 }
diff --git a/context-budget.mjs b/context-budget.mjs
new file mode 100644
index 0000000..0e64b1e
--- /dev/null
+++ b/context-budget.mjs
@@ -0,0 +1,360 @@
+import crypto from 'node:crypto';
+
+export const CONTEXT_BUDGET_MODES = Object.freeze(['off', 'shadow', 'active']);
+export const DEFAULT_CONTEXT_BUDGET_MAX_CHARS = 12_000;
+
+const SOURCE_PRIORITY = Object.freeze({
+  user_task: 100,
+  skill_prompt: 90,
+  goal: 85,
+  temporal: 75,
+  memory: 65,
+  harness: 50,
+});
+
+const HARNESS_TITLE_PRIORITY = Object.freeze({
+  'TKMind 用户空间沙箱': 95,
+  'TKMind 当前时间基准': 94,
+  'TKMind 代码委托策略': 88,
+  'TKMind 日程写入规则': 82,
+  'TKMind 定时自动任务规则': 82,
+  'TKMind 长期记忆规则': 58,
+  'TKMind 用户偏好画像': 57,
+  'TKMind 已沉淀用户记忆': 56,
+});
+
+function normalizeMode(value, fallback = 'off') {
+  const raw = String(value ?? fallback).trim().toLowerCase();
+  return CONTEXT_BUDGET_MODES.includes(raw) ? raw : fallback;
+}
+
+export function resolveContextBudgetMode(env = process.env) {
+  return normalizeMode(env.MEMIND_CONTEXT_BUDGET_MODE, 'off');
+}
+
+export function resolveContextBudgetMaxChars(env = process.env) {
+  const raw = Number(env.MEMIND_CONTEXT_BUDGET_MAX_CHARS ?? DEFAULT_CONTEXT_BUDGET_MAX_CHARS);
+  return Number.isFinite(raw) && raw > 0 ? Math.floor(raw) : DEFAULT_CONTEXT_BUDGET_MAX_CHARS;
+}
+
+export function fingerprintContent(text) {
+  const normalized = String(text ?? '')
+    .replace(/\s+/g, ' ')
+    .trim()
+    .toLowerCase();
+  if (!normalized) return null;
+  return crypto.createHash('sha256').update(normalized).digest('hex').slice(0, 16);
+}
+
+function blockPriority(block) {
+  const source = String(block?.source ?? '').trim();
+  const base = SOURCE_PRIORITY[source] ?? 40;
+  if (source !== 'harness') return base;
+  const title = String(block?.title ?? block?.label ?? '').trim();
+  return HARNESS_TITLE_PRIORITY[title] ?? base;
+}
+
+function blockChars(block) {
+  return String(block?.text ?? block?.content ?? '').length;
+}
+
+function normalizeMemoryBlock(item) {
+  const label = String(item?.label ?? item?.title ?? '').trim();
+  const text = String(item?.text ?? item?.content ?? item?.summary ?? '').trim();
+  if (!text) return null;
+  return {
+    source: 'memory',
+    id: String(item?.id ?? item?.memoryId ?? label ?? text.slice(0, 32)),
+    label: label || null,
+    text,
+    fingerprint: fingerprintContent(text),
+    priority: SOURCE_PRIORITY.memory,
+    chars: text.length,
+  };
+}
+
+function normalizeHarnessBlock(entry) {
+  const title = String(entry?.title ?? '').trim();
+  const text = String(entry?.content ?? entry?.text ?? '').trim();
+  if (!text) return null;
+  return {
+    source: 'harness',
+    id: title || text.slice(0, 32),
+    title: title || null,
+    text,
+    fingerprint: fingerprintContent(text),
+    priority: blockPriority({ source: 'harness', title }),
+    chars: text.length,
+  };
+}
+
+export function buildContextBudgetBlocks({
+  memories = [],
+  temporalText = '',
+  goalEnvelope = '',
+  harnessEntries = [],
+  skillPrompt = '',
+  userTask = '',
+} = {}) {
+  const blocks = [];
+
+  const task = String(userTask ?? '').trim();
+  if (task) {
+    blocks.push({
+      source: 'user_task',
+      id: 'user_task',
+      text: task,
+      fingerprint: fingerprintContent(task),
+      priority: SOURCE_PRIORITY.user_task,
+      chars: task.length,
+    });
+  }
+
+  const skill = String(skillPrompt ?? '').trim();
+  if (skill) {
+    blocks.push({
+      source: 'skill_prompt',
+      id: 'skill_prompt',
+      text: skill,
+      fingerprint: fingerprintContent(skill),
+      priority: SOURCE_PRIORITY.skill_prompt,
+      chars: skill.length,
+    });
+  }
+
+  const goal = String(goalEnvelope ?? '').trim();
+  if (goal) {
+    blocks.push({
+      source: 'goal',
+      id: 'goal',
+      text: goal,
+      fingerprint: fingerprintContent(goal),
+      priority: SOURCE_PRIORITY.goal,
+      chars: goal.length,
+    });
+  }
+
+  const temporal = String(temporalText ?? '').trim();
+  if (temporal) {
+    blocks.push({
+      source: 'temporal',
+      id: 'temporal',
+      text: temporal,
+      fingerprint: fingerprintContent(temporal),
+      priority: SOURCE_PRIORITY.temporal,
+      chars: temporal.length,
+    });
+  }
+
+  for (const item of Array.isArray(memories) ? memories : []) {
+    const block = normalizeMemoryBlock(item);
+    if (block) blocks.push(block);
+  }
+
+  for (const entry of Array.isArray(harnessEntries) ? harnessEntries : []) {
+    const block = normalizeHarnessBlock(entry);
+    if (block) blocks.push(block);
+  }
+
+  return blocks;
+}
+
+export function planContextBudget(input = {}, { maxChars, env = process.env } = {}) {
+  const mode = resolveContextBudgetMode(env);
+  const budget = Number.isFinite(maxChars) ? maxChars : resolveContextBudgetMaxChars(env);
+  const blocks = buildContextBudgetBlocks(input);
+  const seenFingerprints = new Set();
+  const kept = [];
+  const droppedItems = [];
+  const duplicateItems = [];
+
+  const sorted = [...blocks].sort((a, b) => {
+    const priorityDelta = blockPriority(b) - blockPriority(a);
+    if (priorityDelta !== 0) return priorityDelta;
+    return blockChars(a) - blockChars(b);
+  });
+
+  let totalChars = 0;
+  for (const block of sorted) {
+    if (block.source === 'user_task') {
+      kept.push(block);
+      totalChars += block.chars;
+      if (block.fingerprint) seenFingerprints.add(block.fingerprint);
+      continue;
+    }
+
+    if (block.fingerprint && seenFingerprints.has(block.fingerprint)) {
+      duplicateItems.push({
+        source: block.source,
+        id: block.id,
+        reason: 'duplicate_fingerprint',
+        fingerprint: block.fingerprint,
+        chars: block.chars,
+      });
+      continue;
+    }
+
+    if (totalChars + block.chars > budget) {
+      droppedItems.push({
+        source: block.source,
+        id: block.id,
+        reason: 'over_budget',
+        fingerprint: block.fingerprint ?? null,
+        chars: block.chars,
+        priority: blockPriority(block),
+      });
+      continue;
+    }
+
+    kept.push(block);
+    totalChars += block.chars;
+    if (block.fingerprint) seenFingerprints.add(block.fingerprint);
+  }
+
+  const fingerprints = [...seenFingerprints];
+  return {
+    mode,
+    budget,
+    blocks: kept,
+    droppedItems,
+    duplicateItems,
+    totalChars,
+    fingerprints,
+    inputBlockCount: blocks.length,
+    keptBlockCount: kept.length,
+  };
+}
+
+export function applyContextBudgetToOrchestration({
+  memoryContext = null,
+  goalContext = null,
+  runtimeContext = null,
+  skillPrompt = '',
+  userTask = '',
+  plan = null,
+  env = process.env,
+} = {}) {
+  const mode = resolveContextBudgetMode(env);
+  if (mode === 'off') {
+    return {
+      memoryContext,
+      goalContext,
+      runtimeContext,
+      skillPrompt,
+      plan: null,
+      applied: false,
+    };
+  }
+
+  const resolvedPlan = plan ?? planContextBudget({
+    memories: memoryContext?.injectionEnabled ? memoryContext.memories : [],
+    temporalText: runtimeContext?.injectionEnabled ? runtimeContext.injectionText : '',
+    goalEnvelope: goalContext?.injectionEnabled ? goalContext.envelope : '',
+    skillPrompt,
+    userTask,
+  }, { env });
+
+  if (mode === 'shadow') {
+    return {
+      memoryContext,
+      goalContext,
+      runtimeContext,
+      skillPrompt,
+      plan: resolvedPlan,
+      applied: false,
+    };
+  }
+
+  const keptBySource = {
+    memory: new Set(),
+    goal: false,
+    temporal: false,
+    skill_prompt: false,
+  };
+
+  for (const block of resolvedPlan.blocks) {
+    if (block.source === 'memory') keptBySource.memory.add(block.id);
+    if (block.source === 'goal') keptBySource.goal = true;
+    if (block.source === 'temporal') keptBySource.temporal = true;
+    if (block.source === 'skill_prompt') keptBySource.skill_prompt = true;
+  }
+
+  const nextMemoryContext = memoryContext?.injectionEnabled
+    ? {
+      ...memoryContext,
+      memories: (Array.isArray(memoryContext.memories) ? memoryContext.memories : [])
+        .filter((item, index) => {
+          const label = String(item?.label ?? item?.title ?? '').trim();
+          const text = String(item?.text ?? item?.content ?? item?.summary ?? '').trim();
+          const id = String(item?.id ?? item?.memoryId ?? label ?? (text.slice(0, 32) || `memory-${index}`));
+          return keptBySource.memory.has(id);
+        }),
+    }
+    : memoryContext;
+
+  const nextGoalContext = goalContext?.injectionEnabled && !keptBySource.goal
+    ? { ...goalContext, injectionEnabled: false, envelope: '' }
+    : goalContext;
+
+  const nextRuntimeContext = runtimeContext?.injectionEnabled && !keptBySource.temporal
+    ? { ...runtimeContext, injectionEnabled: false, injectionText: '' }
+    : runtimeContext;
+
+  const nextSkillPrompt = keptBySource.skill_prompt ? skillPrompt : '';
+
+  return {
+    memoryContext: nextMemoryContext,
+    goalContext: nextGoalContext,
+    runtimeContext: nextRuntimeContext,
+    skillPrompt: nextSkillPrompt,
+    plan: resolvedPlan,
+    applied: true,
+  };
+}
+
+export function applyContextBudgetToHarnessEntries(entries = [], { plan = null, env = process.env } = {}) {
+  const mode = resolveContextBudgetMode(env);
+  if (mode !== 'active') {
+    return {
+      entries,
+      plan: plan ?? (mode === 'shadow'
+        ? planContextBudget({ harnessEntries: entries }, { env })
+        : null),
+      applied: false,
+    };
+  }
+
+  const resolvedPlan = plan ?? planContextBudget({ harnessEntries: entries }, { env });
+  const keptIds = new Set(
+    resolvedPlan.blocks
+      .filter((block) => block.source === 'harness')
+      .map((block) => block.id),
+  );
+
+  return {
+    entries: entries.filter((entry) => {
+      const title = String(entry?.title ?? '').trim();
+      const text = String(entry?.content ?? entry?.text ?? '').trim();
+      const id = title || text.slice(0, 32);
+      return keptIds.has(id);
+    }),
+    plan: resolvedPlan,
+    applied: true,
+  };
+}
+
+export function buildContextBudgetResolvedEvent(plan) {
+  if (!plan) return null;
+  return {
+    mode: plan.mode,
+    budget: plan.budget,
+    totalChars: plan.totalChars,
+    inputBlockCount: plan.inputBlockCount,
+    keptBlockCount: plan.keptBlockCount,
+    droppedCount: plan.droppedItems.length,
+    duplicateCount: plan.duplicateItems.length,
+    droppedItems: plan.droppedItems,
+    duplicateItems: plan.duplicateItems,
+    fingerprints: plan.fingerprints,
+  };
+}
diff --git a/context-budget.test.mjs b/context-budget.test.mjs
new file mode 100644
index 0000000..02ebbb1
--- /dev/null
+++ b/context-budget.test.mjs
@@ -0,0 +1,98 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  applyContextBudgetToHarnessEntries,
+  applyContextBudgetToOrchestration,
+  buildContextBudgetBlocks,
+  fingerprintContent,
+  planContextBudget,
+  resolveContextBudgetMode,
+} from './context-budget.mjs';
+
+test('resolveContextBudgetMode defaults to off', () => {
+  assert.equal(resolveContextBudgetMode({}), 'off');
+  assert.equal(resolveContextBudgetMode({ MEMIND_CONTEXT_BUDGET_MODE: 'shadow' }), 'shadow');
+  assert.equal(resolveContextBudgetMode({ MEMIND_CONTEXT_BUDGET_MODE: 'bogus' }), 'off');
+});
+
+test('fingerprintContent normalizes whitespace and case', () => {
+  assert.equal(
+    fingerprintContent(' Hello   World '),
+    fingerprintContent('hello world'),
+  );
+});
+
+test('planContextBudget dedupes duplicate fingerprints across sources', () => {
+  const duplicate = '用户偏好：喜欢简洁回答';
+  const plan = planContextBudget({
+    memories: [{ label: '偏好', text: duplicate }],
+    harnessEntries: [{ title: 'TKMind 用户偏好画像', content: duplicate }],
+    userTask: '帮我总结今天的工作',
+  }, {
+    maxChars: 10_000,
+    env: { MEMIND_CONTEXT_BUDGET_MODE: 'shadow' },
+  });
+
+  assert.equal(plan.duplicateItems.length, 1);
+  assert.equal(plan.keptBlockCount, plan.inputBlockCount - 1);
+});
+
+test('planContextBudget drops lower-priority blocks when over budget', () => {
+  const plan = planContextBudget({
+    userTask: 'task',
+    skillPrompt: 'skill',
+    goalEnvelope: 'goal',
+    temporalText: 'temporal',
+    memories: [{ label: 'm1', text: 'memory-one' }],
+    harnessEntries: [{ title: 'TKMind 已沉淀用户记忆', content: 'stored-memory' }],
+  }, {
+    maxChars: 20,
+    env: { MEMIND_CONTEXT_BUDGET_MODE: 'active' },
+  });
+
+  assert.ok(plan.droppedItems.length > 0);
+  assert.ok(plan.blocks.some((block) => block.source === 'user_task'));
+  assert.ok(plan.droppedItems.every((item) => item.source !== 'user_task'));
+});
+
+test('applyContextBudgetToOrchestration is no-op in shadow mode', () => {
+  const memoryContext = {
+    injectionEnabled: true,
+    memories: [{ label: 'a', text: 'alpha' }, { label: 'b', text: 'beta' }],
+  };
+  const applied = applyContextBudgetToOrchestration({
+    memoryContext,
+    userTask: 'do work',
+    env: { MEMIND_CONTEXT_BUDGET_MODE: 'shadow', MEMIND_CONTEXT_BUDGET_MAX_CHARS: '10' },
+  });
+
+  assert.equal(applied.applied, false);
+  assert.equal(applied.memoryContext.memories.length, 2);
+  assert.ok(applied.plan);
+});
+
+test('applyContextBudgetToHarnessEntries filters in active mode', () => {
+  const entries = [
+    { title: 'TKMind 当前时间基准', content: 'time anchor' },
+    { title: 'TKMind 已沉淀用户记忆', content: 'long '.repeat(200) },
+  ];
+  const applied = applyContextBudgetToHarnessEntries(entries, {
+    env: {
+      MEMIND_CONTEXT_BUDGET_MODE: 'active',
+      MEMIND_CONTEXT_BUDGET_MAX_CHARS: '40',
+    },
+  });
+
+  assert.equal(applied.applied, true);
+  assert.ok(applied.entries.length < entries.length);
+  assert.ok(applied.entries.some((entry) => entry.title === 'TKMind 当前时间基准'));
+});
+
+test('buildContextBudgetBlocks preserves source metadata', () => {
+  const blocks = buildContextBudgetBlocks({
+    userTask: 'hello',
+    harnessEntries: [{ title: 'TKMind 用户空间沙箱', content: 'sandbox rules' }],
+  });
+  assert.ok(blocks.some((block) => block.source === 'user_task'));
+  assert.ok(blocks.some((block) => block.source === 'harness' && block.priority >= 90));
+});
diff --git a/docs/goose-v149-canary.env.example b/docs/goose-v149-canary.env.example
index 8eda161..3a65347 100644
--- a/docs/goose-v149-canary.env.example
+++ b/docs/goose-v149-canary.env.example
@@ -23,3 +23,13 @@ MEMORY_CANDIDATE_ENABLED=0
 
 # Goose v1.49 local session DB (isolated from production memind_sessions)
 # GOOSE_SESSION_DB_URL=postgresql://john@127.0.0.1:5432/goose_sessions_v149_dev
+
+# Headroom context compression (Phase 1, local loopback only)
+# MEMIND_HEADROOM_MODE=off
+# MEMIND_HEADROOM_PROXY_BASE_URL=http://127.0.0.1:8787/v1
+# MEMIND_HEADROOM_UPSTREAM_BASE_URL=http://127.0.0.1:18036/v1
+# HEADROOM_OUTPUT_SHAPER=0
+
+# Context injection budget (Phase 2, default off — does not open memory injection)
+# MEMIND_CONTEXT_BUDGET_MODE=off
+# MEMIND_CONTEXT_BUDGET_MAX_CHARS=12000
diff --git a/llm-providers.mjs b/llm-providers.mjs
index b4b2300..b3b4d57 100644
--- a/llm-providers.mjs
+++ b/llm-providers.mjs
@@ -20,6 +20,11 @@ import {
   buildCursorExecutorLaunchPlan,
   cursorExecutorEnabled,
 } from './cursor-agent-launch.mjs';
+import {
+  probeHeadroomProxyReachable,
+  resolveGoosedApiUrlWithHeadroom,
+  resolveHeadroomMode,
+} from './memind-headroom-policy.mjs';
 
 export const MEMIND_DEEPSEEK_NO_THINK_PROVIDER_ID = 'custom_memind_deepseek_no_think';
 
@@ -885,13 +890,33 @@ async function syncDeepseekNoThinkProfileToGoosed(apiTarget, apiSecret, profile,
       ...(Array.isArray(profile.models) ? profile.models : []),
     ].filter(Boolean).map((item) => String(item).trim()).filter(Boolean)),
   ];
+  const compatProxyBaseUrl = resolveDeepseekNoThinkProxyBaseUrl();
+  const headroomMode = resolveHeadroomMode();
+  const headroomReachable = headroomMode === 'off'
+    ? false
+    : await probeHeadroomProxyReachable({ fetchImpl });
+  const headroomRouting = resolveGoosedApiUrlWithHeadroom({
+    apiUrl: compatProxyBaseUrl,
+    mode: headroomMode,
+    headroomReachable,
+    eligible: true,
+  });
+  if (headroomMode !== 'off') {
+    console.log('[llm-providers] headroom provider routing', {
+      mode: headroomRouting.mode,
+      routed: headroomRouting.routed,
+      fallback: headroomRouting.fallback ?? null,
+      wouldRouteTo: headroomRouting.wouldRouteTo ?? null,
+      apiUrl: headroomRouting.apiUrl,
+    });
+  }
   const goosedProviderId = await upsertCustomProviderOnGoosed(
     apiTarget,
     apiSecret,
     {
       name: 'memind_deepseek_no_think',
       goosedProviderId: MEMIND_DEEPSEEK_NO_THINK_PROVIDER_ID,
-      apiUrl: resolveDeepseekNoThinkProxyBaseUrl(),
+      apiUrl: headroomRouting.apiUrl,
       apiKey: profile.apiKey,
       models,
       defaultModel: profile.defaultModel,
diff --git a/memind-headroom-policy.mjs b/memind-headroom-policy.mjs
new file mode 100644
index 0000000..c9e5606
--- /dev/null
+++ b/memind-headroom-policy.mjs
@@ -0,0 +1,146 @@
+import {
+  resolveDeepseekNoThinkProxyBaseUrl,
+} from './deepseek-no-think-proxy.mjs';
+
+export const DEFAULT_HEADROOM_PROXY_PORT = 8787;
+export const MEMIND_HEADROOM_MODES = Object.freeze(['off', 'shadow', 'active']);
+
+export const DEFAULT_HEADROOM_EXCLUDED_SKILLS = Object.freeze([
+  'static-page-publish',
+  'page-data-collect',
+  'aider-development',
+]);
+
+function normalizeMode(value, fallback = 'off') {
+  const raw = String(value ?? fallback).trim().toLowerCase();
+  return MEMIND_HEADROOM_MODES.includes(raw) ? raw : fallback;
+}
+
+export function resolveHeadroomMode(env = process.env) {
+  return normalizeMode(env.MEMIND_HEADROOM_MODE, 'off');
+}
+
+export function resolveHeadroomProxyPort(env = process.env) {
+  const port = Number(env.MEMIND_HEADROOM_PROXY_PORT ?? DEFAULT_HEADROOM_PROXY_PORT);
+  return Number.isFinite(port) && port > 0 ? port : DEFAULT_HEADROOM_PROXY_PORT;
+}
+
+export function resolveHeadroomProxyBaseUrl(env = process.env) {
+  const explicit = String(env.MEMIND_HEADROOM_PROXY_BASE_URL ?? '').trim();
+  if (explicit) return explicit.replace(/\/$/, '');
+  const host = String(env.MEMIND_HEADROOM_PROXY_HOST ?? '127.0.0.1').trim() || '127.0.0.1';
+  return `http://${host}:${resolveHeadroomProxyPort(env)}/v1`;
+}
+
+export function resolveHeadroomUpstreamBaseUrl(env = process.env) {
+  const explicit = String(env.MEMIND_HEADROOM_UPSTREAM_BASE_URL ?? '').trim();
+  if (explicit) return explicit.replace(/\/$/, '');
+  return resolveDeepseekNoThinkProxyBaseUrl(env);
+}
+
+export function parseHeadroomExcludedSkills(env = process.env) {
+  const raw = String(env.MEMIND_HEADROOM_EXCLUDED_SKILLS ?? '').trim();
+  if (!raw) return [...DEFAULT_HEADROOM_EXCLUDED_SKILLS];
+  return raw.split(',').map((item) => item.trim()).filter(Boolean);
+}
+
+export function isHeadroomEligibleForSkill(skillId, env = process.env) {
+  if (resolveHeadroomMode(env) === 'off') return false;
+  const skill = String(skillId ?? '').trim();
+  if (!skill) return true;
+  return !parseHeadroomExcludedSkills(env).includes(skill);
+}
+
+/**
+ * Decide whether goosed should talk to headroom instead of the direct compat proxy.
+ * fail-open: active mode falls back to the original apiUrl when headroom is unreachable.
+ */
+export function resolveGoosedApiUrlWithHeadroom({
+  apiUrl,
+  mode = resolveHeadroomMode(),
+  headroomReachable = false,
+  eligible = true,
+  env = process.env,
+} = {}) {
+  const normalizedMode = normalizeMode(mode, 'off');
+  const original = String(apiUrl ?? '').trim();
+  if (!original || normalizedMode === 'off' || !eligible) {
+    return {
+      apiUrl: original,
+      mode: normalizedMode,
+      routed: false,
+      eligible,
+    };
+  }
+
+  const headroomBase = resolveHeadroomProxyBaseUrl(env);
+  if (normalizedMode === 'shadow') {
+    return {
+      apiUrl: original,
+      mode: 'shadow',
+      routed: false,
+      eligible: true,
+      wouldRouteTo: headroomBase,
+      upstreamBaseUrl: resolveHeadroomUpstreamBaseUrl(env),
+    };
+  }
+
+  if (!headroomReachable) {
+    return {
+      apiUrl: original,
+      mode: 'active',
+      routed: false,
+      eligible: true,
+      fallback: 'headroom_unreachable',
+      wouldRouteTo: headroomBase,
+    };
+  }
+
+  return {
+    apiUrl: headroomBase,
+    mode: 'active',
+    routed: true,
+    eligible: true,
+    upstreamBaseUrl: resolveHeadroomUpstreamBaseUrl(env),
+  };
+}
+
+export function buildHeadroomRunObservation({ skillId, env = process.env } = {}) {
+  const mode = resolveHeadroomMode(env);
+  const eligible = isHeadroomEligibleForSkill(skillId, env);
+  return {
+    mode,
+    eligible,
+    excludedSkills: parseHeadroomExcludedSkills(env),
+    proxyBaseUrl: mode !== 'off' ? resolveHeadroomProxyBaseUrl(env) : null,
+    upstreamBaseUrl: mode !== 'off' ? resolveHeadroomUpstreamBaseUrl(env) : null,
+  };
+}
+
+export async function probeHeadroomProxyReachable({
+  baseUrl,
+  fetchImpl = fetch,
+  timeoutMs = 1500,
+  env = process.env,
+} = {}) {
+  const root = String(baseUrl ?? resolveHeadroomProxyBaseUrl(env))
+    .trim()
+    .replace(/\/v1\/?$/i, '');
+  if (!root) return false;
+
+  const controller = new AbortController();
+  const timer = setTimeout(() => controller.abort(), timeoutMs);
+  try {
+    const response = await fetchImpl(`${root}/v1/models`, {
+      method: 'GET',
+      signal: controller.signal,
+      headers: { Authorization: 'Bearer headroom-probe' },
+    });
+    // Proxy alive when it responds, even with auth/upstream errors.
+    return response.status > 0;
+  } catch {
+    return false;
+  } finally {
+    clearTimeout(timer);
+  }
+}
diff --git a/memind-headroom-policy.test.mjs b/memind-headroom-policy.test.mjs
new file mode 100644
index 0000000..57812e9
--- /dev/null
+++ b/memind-headroom-policy.test.mjs
@@ -0,0 +1,79 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  buildHeadroomRunObservation,
+  isHeadroomEligibleForSkill,
+  resolveGoosedApiUrlWithHeadroom,
+  resolveHeadroomMode,
+  resolveHeadroomProxyBaseUrl,
+} from './memind-headroom-policy.mjs';
+
+test('resolveHeadroomMode defaults to off and rejects unknown values', () => {
+  assert.equal(resolveHeadroomMode({}), 'off');
+  assert.equal(resolveHeadroomMode({ MEMIND_HEADROOM_MODE: 'shadow' }), 'shadow');
+  assert.equal(resolveHeadroomMode({ MEMIND_HEADROOM_MODE: 'bogus' }), 'off');
+});
+
+test('resolveHeadroomProxyBaseUrl honors explicit override', () => {
+  assert.equal(
+    resolveHeadroomProxyBaseUrl({ MEMIND_HEADROOM_PROXY_BASE_URL: 'http://127.0.0.1:9999/v1' }),
+    'http://127.0.0.1:9999/v1',
+  );
+});
+
+test('isHeadroomEligibleForSkill excludes page and code skills by default', () => {
+  assert.equal(isHeadroomEligibleForSkill('web', { MEMIND_HEADROOM_MODE: 'shadow' }), true);
+  assert.equal(
+    isHeadroomEligibleForSkill('static-page-publish', { MEMIND_HEADROOM_MODE: 'shadow' }),
+    false,
+  );
+  assert.equal(
+    isHeadroomEligibleForSkill('page-data-collect', { MEMIND_HEADROOM_MODE: 'active' }),
+    false,
+  );
+});
+
+test('resolveGoosedApiUrlWithHeadroom is fail-open in active mode', () => {
+  const original = 'http://127.0.0.1:18036/v1';
+  const shadow = resolveGoosedApiUrlWithHeadroom({
+    apiUrl: original,
+    mode: 'shadow',
+    headroomReachable: false,
+    eligible: true,
+    env: { MEMIND_HEADROOM_PROXY_BASE_URL: 'http://127.0.0.1:8787/v1' },
+  });
+  assert.equal(shadow.apiUrl, original);
+  assert.equal(shadow.routed, false);
+  assert.equal(shadow.wouldRouteTo, 'http://127.0.0.1:8787/v1');
+
+  const activeFallback = resolveGoosedApiUrlWithHeadroom({
+    apiUrl: original,
+    mode: 'active',
+    headroomReachable: false,
+    eligible: true,
+    env: { MEMIND_HEADROOM_PROXY_BASE_URL: 'http://127.0.0.1:8787/v1' },
+  });
+  assert.equal(activeFallback.apiUrl, original);
+  assert.equal(activeFallback.fallback, 'headroom_unreachable');
+
+  const active = resolveGoosedApiUrlWithHeadroom({
+    apiUrl: original,
+    mode: 'active',
+    headroomReachable: true,
+    eligible: true,
+    env: { MEMIND_HEADROOM_PROXY_BASE_URL: 'http://127.0.0.1:8787/v1' },
+  });
+  assert.equal(active.apiUrl, 'http://127.0.0.1:8787/v1');
+  assert.equal(active.routed, true);
+});
+
+test('buildHeadroomRunObservation reports skill eligibility', () => {
+  const observation = buildHeadroomRunObservation({
+    skillId: 'static-page-publish',
+    env: { MEMIND_HEADROOM_MODE: 'shadow' },
+  });
+  assert.equal(observation.mode, 'shadow');
+  assert.equal(observation.eligible, false);
+  assert.equal(observation.proxyBaseUrl, 'http://127.0.0.1:8787/v1');
+});
diff --git a/scripts/check-goosed-v149-portal-resume.mjs b/scripts/check-goosed-v149-portal-resume.mjs
index b202d3b..758213b 100644
--- a/scripts/check-goosed-v149-portal-resume.mjs
+++ b/scripts/check-goosed-v149-portal-resume.mjs
@@ -7,6 +7,7 @@ import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 
 import { prepareGooseV149CheckEnv } from './goose-v149-canary.mjs';
+import { waitForAgentRunWorkerIdle } from './goose-v149-worker-idle.mjs';
 import {
   createReporter,
   loginViaApi,
@@ -47,7 +48,8 @@ async function createGoosedAgentRun(baseUrl, cookie, { sessionId, message }) {
     body: JSON.stringify({
       request_id: requestId,
       session_id: sessionId,
-      force_deep_reasoning: process.env.GOOSE_V149_PORTAL_RESUME_FORCE_DEEP !== '0',
+      // Resume smoke validates session round-trip, not deep-reasoning latency.
+      force_deep_reasoning: process.env.GOOSE_V149_PORTAL_RESUME_FORCE_DEEP === '1',
       user_message: {
         id: crypto.randomUUID(),
         role: 'user',
@@ -104,6 +106,10 @@ async function main() {
     return;
   }
 
+  await waitForAgentRunWorkerIdle(root, process.env, {
+    logPrefix: '[goose-v149-portal-resume]',
+  });
+
   const reporter = createReporter();
   const username = process.env.RELEASE_GATE_SCENARIO_USERNAME ?? 'john';
   const password =
diff --git a/scripts/check-headroom-proxy-local.mjs b/scripts/check-headroom-proxy-local.mjs
new file mode 100644
index 0000000..97b9683
--- /dev/null
+++ b/scripts/check-headroom-proxy-local.mjs
@@ -0,0 +1,38 @@
+#!/usr/bin/env node
+/**
+ * Local headroom proxy smoke (loopback only).
+ * Requires: headroom proxy running with upstream pointing at DeepSeek compat proxy.
+ *
+ * Example:
+ *   OPENAI_BASE_URL=http://127.0.0.1:18036/v1 HEADROOM_OUTPUT_SHAPER=0 headroom proxy --port 8787
+ */
+import {
+  buildHeadroomRunObservation,
+  probeHeadroomProxyReachable,
+  resolveHeadroomMode,
+  resolveHeadroomProxyBaseUrl,
+  resolveHeadroomUpstreamBaseUrl,
+} from '../memind-headroom-policy.mjs';
+
+const mode = resolveHeadroomMode(process.env);
+if (mode === 'off') {
+  console.log('HEADROOM_LOCAL_SKIP: MEMIND_HEADROOM_MODE=off');
+  process.exit(0);
+}
+
+const reachable = await probeHeadroomProxyReachable();
+const observation = buildHeadroomRunObservation({ skillId: 'web' });
+
+console.log('HEADROOM_LOCAL_PROBE:');
+console.log(`  mode=${mode}`);
+console.log(`  proxy=${resolveHeadroomProxyBaseUrl()}`);
+console.log(`  upstream=${resolveHeadroomUpstreamBaseUrl()}`);
+console.log(`  reachable=${reachable}`);
+console.log(`  observation=${JSON.stringify(observation)}`);
+
+if (!reachable) {
+  console.error('HEADROOM_LOCAL_FAIL: proxy unreachable');
+  process.exit(1);
+}
+
+console.log('HEADROOM_LOCAL_OK');
diff --git a/session-reconcile.mjs b/session-reconcile.mjs
index df589ee..56ae8b2 100644
--- a/session-reconcile.mjs
+++ b/session-reconcile.mjs
@@ -1,5 +1,6 @@
 import path from 'node:path';
 import { developerToolsFromPolicy } from './capabilities.mjs';
+import { applyContextBudgetToHarnessEntries } from './context-budget.mjs';
 import { buildSessionMemoryEntries } from './user-memory-profile.mjs';
 import { buildSandboxSessionConstraints } from './user-publish.mjs';
 
@@ -307,13 +308,23 @@ export async function reconcileAgentSession(
       })
     : null;
 
-  const memoryEntries = buildSessionMemoryEntries({
+  const rawMemoryEntries = buildSessionMemoryEntries({
     workingDir,
     sessionPolicy,
     sandboxConstraints: sandboxText,
     userContext,
     userMemories,
   });
+  const { entries: memoryEntries, plan: harnessBudgetPlan } = applyContextBudgetToHarnessEntries(
+    rawMemoryEntries,
+  );
+  if (harnessBudgetPlan?.mode === 'shadow' && harnessBudgetPlan.duplicateItems.length > 0) {
+    console.log('[session-reconcile] context budget shadow', {
+      duplicateCount: harnessBudgetPlan.duplicateItems.length,
+      droppedCount: harnessBudgetPlan.droppedItems.length,
+      keptBlockCount: harnessBudgetPlan.keptBlockCount,
+    });
+  }
 
   if (memoryEntries.length > 0) {
     for (const entry of memoryEntries) {