diff --git a/paperforge/config.py b/paperforge/config.py
index 8f634566..403c34b8 100644
--- a/paperforge/config.py
+++ b/paperforge/config.py
@@ -55,6 +55,7 @@ DEFAULT_CONFIG: dict[str, str] = {
     "base_dir": "Bases",
     "skill_dir": ".opencode/skills",
     "command_dir": ".opencode/command",
+    "agent_platform": "opencode",
 }
 
 # Environment variable name map — maps config key to PAPERFORGE_* env var
diff --git a/paperforge/plugin/main.js b/paperforge/plugin/main.js
index b443e80a..edab7739 100644
--- a/paperforge/plugin/main.js
+++ b/paperforge/plugin/main.js
@@ -1475,6 +1475,43 @@ class PaperForgeStatusView extends ItemView {
             modal.open();
             return;
         }
+        // Pure JS: Copy Context (single paper) — uses in-memory entry, no subprocess
+        if (a.id === 'paperforge-copy-context') {
+            let entry = this._currentPaperEntry;
+            if (!entry) {
+                const file = this.app.workspace.getActiveFile();
+                if (file) {
+                    const cache = this.app.metadataCache.getFileCache(file);
+                    const key = cache?.frontmatter?.zotero_key;
+                    if (key) entry = this._findEntry(key);
+                }
+            }
+            if (entry) {
+                navigator.clipboard.writeText(JSON.stringify(entry, null, 2)).then(() => {
+                    this._showMessage('[OK] ' + (entry.zotero_key || '') + ' copied to clipboard', 'ok');
+                    new Notice('[OK] Paper context copied to clipboard', 4000);
+                }).catch(e => {
+                    this._showMessage('[!!] Clipboard failed: ' + e.message, 'error');
+                });
+            } else {
+                this._showMessage('[!!] No paper entry found', 'error');
+                new Notice('[!!] Open a paper note or select one in the dashboard first', 5000);
+            }
+            return;
+        }
+
+        // Pure JS: Copy Collection Context — uses cached index, no subprocess
+        if (a.id === 'paperforge-copy-collection-context') {
+            const items = this._cachedItems || [];
+            navigator.clipboard.writeText(JSON.stringify(items, null, 2)).then(() => {
+                this._showMessage('[OK] ' + items.length + ' entries copied to clipboard', 'ok');
+                new Notice('[OK] ' + items.length + ' papers copied to clipboard', 4000);
+            }).catch(e => {
+                this._showMessage('[!!] Clipboard failed: ' + e.message, 'error');
+            });
+            return;
+        }
+
         // Guard: disabled actions show coming-soon notice
         if (a.disabled) {
             new Notice(`[i] ${a.disabledMsg || 'This action is not yet available.'}`, 6000);
diff --git a/paperforge/plugin/src/testable.js b/paperforge/plugin/src/testable.js
index 8cbef65d..891f0e9b 100644
--- a/paperforge/plugin/src/testable.js
+++ b/paperforge/plugin/src/testable.js
@@ -175,7 +175,6 @@ const ACTIONS = [
         desc: "Copy this paper\u2019s canonical index entry JSON to clipboard for AI use",
         icon: "\u2139",
         cmd: "context",
-        needsKey: true,
         okMsg: "Context copied",
     },
     {
@@ -184,7 +183,6 @@ const ACTIONS = [
         desc: "Copy canonical index entries for all visible papers to clipboard",
         icon: "\u2261",
         cmd: "context",
-        needsFilter: true,
         okMsg: "Collection context copied",
     },
 ];
diff --git a/paperforge/plugin/tests/commands.test.mjs b/paperforge/plugin/tests/commands.test.mjs
index c9d3b680..b2650f1a 100644
--- a/paperforge/plugin/tests/commands.test.mjs
+++ b/paperforge/plugin/tests/commands.test.mjs
@@ -26,11 +26,11 @@ describe('ACTIONS', () => {
     it('repair action is enabled (no disabled flag)', () => {
         expect(ACTIONS.find(a => a.id === 'paperforge-repair')?.disabled).toBeUndefined();
     });
-    it('copy-context action has needsKey', () => {
-        expect(ACTIONS.find(a => a.id === 'paperforge-copy-context')?.needsKey).toBe(true);
+    it('copy-context action has no needsKey (pure JS)', () => {
+        expect(ACTIONS.find(a => a.id === 'paperforge-copy-context')?.needsKey).toBeUndefined();
     });
-    it('copy-collection-context action has needsFilter', () => {
-        expect(ACTIONS.find(a => a.id === 'paperforge-copy-collection-context')?.needsFilter).toBe(true);
+    it('copy-collection-context action has no needsFilter (pure JS)', () => {
+        expect(ACTIONS.find(a => a.id === 'paperforge-copy-collection-context')?.needsFilter).toBeUndefined();
     });
 });
 
diff --git a/paperforge/services/skill_deploy.py b/paperforge/services/skill_deploy.py
new file mode 100644
index 00000000..f821baf3
--- /dev/null
+++ b/paperforge/services/skill_deploy.py
@@ -0,0 +1,261 @@
+"""Skill deployment service — single source of truth for agent skill installation and updates.
+
+Used by both setup wizard (install) and update worker (update).
+All deployments are vault-local only.
+"""
+
+from __future__ import annotations
+
+import shutil
+from pathlib import Path
+
+# ── Agent Platform Configurations ──
+# Canonical source of truth. setup_wizard.py imports from here.
+
+AGENT_CONFIGS = {
+    "opencode": {
+        "name": "OpenCode",
+        "skill_dir": ".opencode/skills",
+        "command_dir": ".opencode/command",
+        "format": "flat_command",
+        "prefix": "/",
+        "config_file": None,
+    },
+    "claude": {
+        "name": "Claude Code",
+        "skill_dir": ".claude/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": ".claude/skills.json",
+    },
+    "codex": {
+        "name": "Codex",
+        "skill_dir": ".codex/skills",
+        "format": "skill_directory",
+        "prefix": "$",
+        "config_file": None,
+    },
+    "cursor": {
+        "name": "Cursor",
+        "skill_dir": ".cursor/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": ".cursor/settings.json",
+    },
+    "windsurf": {
+        "name": "Windsurf",
+        "skill_dir": ".windsurf/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": None,
+    },
+    "github_copilot": {
+        "name": "GitHub Copilot",
+        "skill_dir": ".github/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": ".github/copilot-instructions.md",
+    },
+    "cline": {
+        "name": "Cline",
+        "skill_dir": ".clinerules",
+        "format": "rules_file",
+        "prefix": "/",
+        "config_file": ".clinerules",
+    },
+    "augment": {
+        "name": "Augment",
+        "skill_dir": ".augment/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": None,
+    },
+    "trae": {
+        "name": "Trae",
+        "skill_dir": ".trae/skills",
+        "format": "skill_directory",
+        "prefix": "/",
+        "config_file": None,
+    },
+}
+
+
+def _resolve_source_root() -> Path:
+    """Resolve the paperforge package root (where skills/ lives)."""
+    import paperforge
+    return Path(paperforge.__file__).parent
+
+
+def _substitute_vars(text: str, system_dir: str, resources_dir: str, literature_dir: str, base_dir: str, skill_dir: str, prefix: str = "/") -> str:
+    for old, new in [
+        ("<system_dir>", system_dir),
+        ("<resources_dir>", resources_dir),
+        ("<literature_dir>", literature_dir),
+        ("<base_dir>", base_dir),
+        ("<skill_dir>", skill_dir),
+        ("<prefix>", prefix),
+    ]:
+        text = text.replace(old, new)
+    return text
+
+
+# ── Deploy helpers ──
+
+def _deploy_skill_directory(vault: Path, skill_dir: str, source_root: Path, system_dir: str, resources_dir: str, literature_dir: str, base_dir: str, prefix: str = "/", overwrite: bool = False) -> list[str]:
+    """Deploy pf-* skills as independent SKILL.md directories (Claude Code, Codex, Cursor, etc.)."""
+    imported = []
+    src_scripts = source_root / "skills" / "literature-qa" / "scripts"
+    src_charts = source_root / "skills" / "literature-qa" / "chart-reading"
+    src_prompt = source_root / "skills" / "literature-qa" / "prompt_deep_subagent.md"
+
+    for skill_file in sorted(src_scripts.glob("pf-*.md")):
+        skill_name = skill_file.stem
+        skill_dst = vault / skill_dir / skill_name
+        skill_dst.mkdir(parents=True, exist_ok=True)
+        text = skill_file.read_text(encoding="utf-8")
+        text = _substitute_vars(text, system_dir, resources_dir, literature_dir, base_dir, skill_dir, prefix)
+        dst_file = skill_dst / "SKILL.md"
+        if overwrite or not dst_file.exists():
+            dst_file.write_text(text, encoding="utf-8")
+        imported.append(skill_name)
+
+    # pf-deep extras: scripts, chart-reading, subagent prompt
+    pf_deep_dst = vault / skill_dir / "pf-deep"
+    pf_deep_dst.mkdir(parents=True, exist_ok=True)
+    ld_dst = pf_deep_dst / "scripts" / "ld_deep.py"
+    ld_src = src_scripts / "ld_deep.py"
+    if ld_src.exists() and (overwrite or not ld_dst.exists()):
+        ld_dst.parent.mkdir(parents=True, exist_ok=True)
+        shutil.copy2(ld_src, ld_dst)
+    prompt_dst = pf_deep_dst / "prompt_deep_subagent.md"
+    if src_prompt.exists() and (overwrite or not prompt_dst.exists()):
+        shutil.copy2(src_prompt, prompt_dst)
+    if src_charts.exists() and src_charts.is_dir():
+        chart_dst = pf_deep_dst / "chart-reading"
+        if overwrite and chart_dst.exists():
+            shutil.rmtree(chart_dst)
+        chart_dst.mkdir(parents=True, exist_ok=True)
+        for f in src_charts.glob("*.md"):
+            if overwrite or not (chart_dst / f.name).exists():
+                shutil.copy2(f, chart_dst / f.name)
+
+    return imported
+
+
+def _deploy_flat_command(vault: Path, command_dir: str, source_root: Path, system_dir: str, resources_dir: str, literature_dir: str, base_dir: str, skill_dir: str, overwrite: bool = False) -> list[str]:
+    """Deploy skills in flat .md command format (OpenCode)."""
+    imported = []
+    command_src = source_root / "skills" / "literature-qa" / "scripts"
+    command_dst = vault / command_dir
+    if not (command_src.exists() and command_src.is_dir()):
+        return imported
+
+    command_dst.mkdir(parents=True, exist_ok=True)
+    for f in command_src.glob("pf-*.md"):
+        text = f.read_text(encoding="utf-8")
+        text = _substitute_vars(text, system_dir, resources_dir, literature_dir, base_dir, skill_dir)
+        dst_file = command_dst / f.name
+        if overwrite or not dst_file.exists():
+            dst_file.write_text(text, encoding="utf-8")
+        imported.append(f.stem)
+
+    return imported
+
+
+def _deploy_rules_file(vault: Path, skill_dir: str, source_root: Path, system_dir: str, resources_dir: str, literature_dir: str, base_dir: str, overwrite: bool = False) -> list[str]:
+    """Deploy skills as .clinerules directory (Cline)."""
+    imported = []
+    src_scripts = source_root / "skills" / "literature-qa" / "scripts"
+    src_charts = source_root / "skills" / "literature-qa" / "chart-reading"
+    src_prompt = source_root / "skills" / "literature-qa" / "prompt_deep_subagent.md"
+
+    pf_deep_dst = vault / skill_dir / "pf-deep"
+    pf_deep_dst.mkdir(parents=True, exist_ok=True)
+    ld_src = src_scripts / "ld_deep.py"
+    ld_dst = pf_deep_dst / "scripts" / "ld_deep.py"
+    if ld_src.exists() and (overwrite or not ld_dst.exists()):
+        ld_dst.parent.mkdir(parents=True, exist_ok=True)
+        shutil.copy2(ld_src, ld_dst)
+    prompt_dst = pf_deep_dst / "prompt_deep_subagent.md"
+    if src_prompt.exists() and (overwrite or not prompt_dst.exists()):
+        shutil.copy2(src_prompt, prompt_dst)
+    if src_charts.exists() and src_charts.is_dir():
+        chart_dst = pf_deep_dst / "chart-reading"
+        if overwrite and chart_dst.exists():
+            shutil.rmtree(chart_dst)
+        chart_dst.mkdir(parents=True, exist_ok=True)
+        for f in src_charts.glob("*.md"):
+            if overwrite or not (chart_dst / f.name).exists():
+                shutil.copy2(f, chart_dst / f.name)
+
+    imported.append("clinerules")
+    return imported
+
+
+# ── Main entry point ──
+
+def deploy_skills(
+    vault: Path,
+    agent_key: str = "opencode",
+    system_dir: str = "System",
+    resources_dir: str = "Resources",
+    literature_dir: str = "Literature",
+    base_dir: str = "Bases",
+    overwrite: bool = False,
+) -> dict:
+    """Deploy skills, commands, and AGENTS.md for a given agent platform.
+
+    Args:
+        vault: Obsidian vault root
+        agent_key: Agent platform key (opencode, cursor, claude, etc.)
+        overwrite: True for update (overwrite existing), False for install (skip)
+
+    Returns:
+        dict with 'skills', 'commands', 'agents_md', 'errors' keys
+    """
+    agent_config = AGENT_CONFIGS.get(agent_key)
+    if not agent_config:
+        return {"skills": [], "commands": [], "agents_md": False, "errors": [f"Unknown agent: {agent_key}"]}
+
+    source_root = _resolve_source_root()
+    if not (source_root / "skills" / "literature-qa").exists():
+        return {"skills": [], "commands": [], "agents_md": False, "errors": ["Skills source not found in package"]}
+
+    skill_dir = agent_config.get("skill_dir", ".opencode/skills")
+    fmt = agent_config.get("format", "skill_directory")
+    prefix = agent_config.get("prefix", "/")
+    imported_skills: list[str] = []
+    errors: list[str] = []
+
+    # Deploy skills by format
+    try:
+        if fmt == "flat_command":
+            imported_skills = _deploy_flat_command(vault, agent_config["command_dir"], source_root, system_dir, resources_dir, literature_dir, base_dir, skill_dir, overwrite)
+            imported_skills += _deploy_skill_directory(vault, skill_dir, source_root, system_dir, resources_dir, literature_dir, base_dir, prefix, overwrite)
+        elif fmt == "rules_file":
+            imported_skills = _deploy_rules_file(vault, agent_config["skill_dir"], source_root, system_dir, resources_dir, literature_dir, base_dir, overwrite)
+        else:
+            imported_skills = _deploy_skill_directory(vault, skill_dir, source_root, system_dir, resources_dir, literature_dir, base_dir, prefix, overwrite)
+    except Exception as e:
+        errors.append(f"Skill deploy failed: {e}")
+
+    # Deploy AGENTS.md
+    agents_ok = False
+    agents_src = source_root.parent / "AGENTS.md"
+    if agents_src.exists():
+        try:
+            agents_dst = vault / "AGENTS.md"
+            text = agents_src.read_text(encoding="utf-8")
+            text = _substitute_vars(text, system_dir, resources_dir, literature_dir, base_dir, skill_dir, prefix)
+            if overwrite or not agents_dst.exists():
+                agents_dst.write_text(text, encoding="utf-8")
+            agents_ok = True
+        except Exception as e:
+            errors.append(f"AGENTS.md deploy failed: {e}")
+
+    return {
+        "skills": imported_skills,
+        "commands": imported_skills,
+        "agents_md": agents_ok,
+        "errors": errors,
+    }
diff --git a/paperforge/setup_wizard.py b/paperforge/setup_wizard.py
index 082a2fb6..f6f58a8a 100644
--- a/paperforge/setup_wizard.py
+++ b/paperforge/setup_wizard.py
@@ -846,60 +846,31 @@ def headless_setup(
             _copy_file_incremental(mod_src, pf_path / "worker/scripts" / mod)
     print(f"    [OK] worker scripts")
 
-    # Deploy skills based on agent format
-    fmt = agent_config.get("format", "skill_directory")
-    prefix = agent_config.get("prefix", "/")
-    imported_skills = []
+    # Deploy skills via shared service (single source of truth)
+    from paperforge.services.skill_deploy import deploy_skills as _deploy_skills_service
 
-    if fmt == "flat_command":
-        imported_skills = _deploy_flat_command(
-            vault,
-            agent_config["command_dir"],
-            repo_root,
-            system_dir,
-            resources_dir,
-            literature_dir,
-            base_dir,
-            skill_dir,
-        )
-        # OpenCode also needs the skill directory (ld_deep.py, prompt, chart-reading)
-        imported_skills += _deploy_skill_directory(
-            vault,
-            skill_dir,
-            repo_root,
-            system_dir,
-            resources_dir,
-            literature_dir,
-            base_dir,
-            prefix,
-        )
-    elif fmt == "rules_file":
-        imported_skills = _deploy_rules_file(
-            vault,
-            agent_config["skill_dir"],
-            repo_root,
-            system_dir,
-            resources_dir,
-            literature_dir,
-            base_dir,
-            skill_dir,
-        )
-    else:
-        # skill_directory (default)
-        imported_skills = _deploy_skill_directory(
-            vault,
-            skill_dir,
-            repo_root,
-            system_dir,
-            resources_dir,
-            literature_dir,
-            base_dir,
-            prefix,
-        )
+    skill_result = _deploy_skills_service(
+        vault=vault,
+        agent_key=agent_key,
+        system_dir=system_dir,
+        resources_dir=resources_dir,
+        literature_dir=literature_dir,
+        base_dir=base_dir,
+        overwrite=False,
+    )
+    imported_skills = skill_result["skills"]
+    for err in skill_result.get("errors", []):
+        print(f"    [WARN] {err}")
 
     if imported_skills:
         print(f"    [OK] {len(imported_skills)} skill(s): {', '.join(imported_skills)}")
 
+    # AGENTS.md
+    if skill_result["agents_md"]:
+        print(f"    [OK] AGENTS.md")
+    else:
+        print(f"    [WARN] AGENTS.md source not found; skipping")
+
     # Create agent config file if defined (e.g., Claude skills.json)
     config_file = agent_config.get("config_file")
     if config_file:
@@ -937,24 +908,6 @@ def headless_setup(
     else:
         print(f"    [WARN] Plugin source not found: {plugin_src}")
 
-    # AGENTS.md
-    agents_src = repo_root / "AGENTS.md"
-    agents_dst = vault / "AGENTS.md"
-    if agents_src.exists():
-        text = agents_src.read_text(encoding="utf-8")
-        for old, new in [
-            ("<system_dir>", system_dir),
-            ("<resources_dir>", resources_dir),
-            ("<literature_dir>", literature_dir),
-            ("<base_dir>", base_dir),
-            ("<skill_dir>", skill_dir),
-        ]:
-            text = text.replace(old, new)
-        _write_text_incremental(agents_dst, text)
-        print(f"    [OK] AGENTS.md")
-    else:
-        print(f"    [WARN] AGENTS.md source not found; skipping")
-
     # =========================================================================
     # Phase 5: Create config files
     # =========================================================================
diff --git a/paperforge/worker/update.py b/paperforge/worker/update.py
index b3385123..edd95970 100644
--- a/paperforge/worker/update.py
+++ b/paperforge/worker/update.py
@@ -34,6 +34,31 @@ def _sync_obsidian_plugin(vault: Path) -> None:
     _pf_utils.install_obsidian_plugin(vault)
 
 
+def _deploy_skills(vault: Path) -> None:
+    """Copy the literature-qa skill from the package to the vault's agent dir."""
+    import paperforge
+
+    src = Path(paperforge.__file__).parent / "skills" / "literature-qa"
+    if not src.exists():
+        logger.debug("Skills source not found: %s", src)
+        return
+
+    raw = read_paperforge_json(vault)
+    agent = raw.get("agent_platform", "opencode")
+    agent_dirs = {
+        "opencode": ".opencode/skills/literature-qa",
+        "claude": ".claude/skills/literature-qa",
+        "cursor": ".cursor/skills/literature-qa",
+        "copilot": ".github/skills/literature-qa",
+        "windsurf": ".windsurf/skills/literature-qa",
+        "codex": ".codex/skills/literature-qa",
+    }
+    target_rel = agent_dirs.get(agent, agent_dirs["opencode"])
+    dst = vault / target_rel
+    shutil.copytree(src, dst, dirs_exist_ok=True)
+    logger.info("Skills deployed: %s -> %s", src, dst)
+
+
 def protected_paths(vault: Path) -> set[str]:
     cfg = load_vault_config(vault)
     pf = f"{cfg['system_dir']}/PaperForge"
@@ -237,6 +262,32 @@ def update_via_zip(vault: Path) -> bool:
         shutil.rmtree(tmp, ignore_errors=True)
 
 
+def _deploy_all_skills(vault: Path) -> None:
+    """Deploy latest skills and AGENTS.md to vault after update."""
+    try:
+        from paperforge.services.skill_deploy import deploy_skills
+        from paperforge.config import load_vault_config
+
+        config = load_vault_config(vault)
+        result = deploy_skills(
+            vault=vault,
+            agent_key=config.get("agent_platform", "opencode"),
+            system_dir=config.get("system_dir", "System"),
+            resources_dir=config.get("resources_dir", "Resources"),
+            literature_dir=config.get("literature_dir", "Literature"),
+            base_dir=config.get("base_dir", "Bases"),
+            overwrite=True,
+        )
+        if result["skills"]:
+            logger.info("已部署 %d 个 skill: %s", len(result["skills"]), ", ".join(result["skills"]))
+        if result["agents_md"]:
+            logger.info("已更新 AGENTS.md")
+        for err in result.get("errors", []):
+            logger.warning("Skill 部署警告: %s", err)
+    except Exception as e:
+        logger.warning("Skill 部署失败（非致命）: %s", e)
+
+
 def run_update(vault: Path) -> int:
     """运行更新检查与安装"""
     try:
@@ -262,6 +313,7 @@ def run_update(vault: Path) -> int:
         needs = remote != local
     if not needs:
         _sync_obsidian_plugin(vault)
+        _deploy_all_skills(vault)
         logger.info("当前已是最新版本")
         return 0
     logger.info("发现新版本: %s -> %s", local, remote)
@@ -298,6 +350,7 @@ def run_update(vault: Path) -> int:
 
     if success:
         _sync_obsidian_plugin(vault)
+        _deploy_all_skills(vault)
         logger.info("更新完成！请重启 Obsidian")
     return 0 if success else 1