diff --git a/common/src/forja_common/__init__.py b/common/src/forja_common/__init__.py
new file mode 100644
index 0000000..200da0a
--- /dev/null
+++ b/common/src/forja_common/__init__.py
@@ -0,0 +1,5 @@
+"""forja_common - shared utilities (client, types, etc.)."""
+
+from forja_common.client import CoreClient
+
+__all__ = ["CoreClient"]
diff --git a/common/src/forja_common/client.py b/common/src/forja_common/client.py
new file mode 100644
index 0000000..125259d
--- /dev/null
+++ b/common/src/forja_common/client.py
@@ -0,0 +1,87 @@
+"""Shared HTTP client for Forja Core API (used by web and cli)."""
+
+from __future__ import annotations
+
+import os
+from typing import Any
+
+import httpx
+
+
+class CoreClient:
+    """Synchronous HTTP client to the Forja Core API."""
+
+    def __init__(self, base_url: str | None = None, timeout: float = 30.0) -> None:
+        self.base_url = base_url or os.getenv("FORJA_CORE_URL", "http://localhost:8000")
+        transport = httpx.HTTPTransport(retries=2)
+        self._client = httpx.Client(base_url=self.base_url, timeout=timeout, transport=transport)
+
+    def close(self) -> None:
+        self._client.close()
+
+    # --- Public API methods ---
+
+    def health(self) -> dict:
+        return self._get("/health")
+
+    def list_agents(self) -> list[dict]:
+        return self._get("/agents")
+
+    def get_agent(self, name: str) -> dict:
+        return self._get(f"/agents/{name}")
+
+    def list_versions(self, name: str) -> list[dict]:
+        return self._get(f"/agents/{name}/versions")
+
+    def diff_versions(self, name: str, v_from: str, v_to: str) -> dict:
+        return self._get(f"/agents/{name}/versions/{v_from}/diff/{v_to}")
+
+    def invoke_agent(self, name: str, body: dict) -> dict:
+        return self._post(f"/agents/{name}/invoke", body)
+
+    def get_execution(self, trace_id: str) -> dict:
+        return self._get(f"/executions/{trace_id}")
+
+    def list_executions(self) -> list[dict]:
+        return self._get("/executions")
+
+    def approve(self, trace_id: str, body: dict) -> dict:
+        return self._post(f"/executions/{trace_id}/approve", body)
+
+    def reject(self, trace_id: str, body: dict) -> dict:
+        return self._post(f"/executions/{trace_id}/reject", body)
+
+    def list_violations(self, **filters: Any) -> list[dict]:
+        params = {k: v for k, v in filters.items() if v is not None}
+        return self._get("/violations", params=params)
+
+    def list_policies(self) -> list[dict]:
+        return self._get("/policies")
+
+    def list_policy_versions(self, name: str) -> list[dict]:
+        return self._get(f"/policies/{name}/versions")
+
+    def create_agent_version(self, name: str, agent_def: dict, message: str, author: str = "cli") -> dict:
+        body = {"agent": agent_def, "message": message, "author": author}
+        return self._post(f"/agents/{name}/versions", body)
+
+    def create_policy_version(self, name: str, policy_def: dict, message: str, author: str = "cli") -> dict:
+        body = {"policy": policy_def, "message": message, "author": author}
+        return self._post(f"/policies/{name}/versions", body)
+
+    def list_validators(self) -> dict:
+        return self._get("/policies/validators")
+
+    # --- Internal helpers ---
+
+    def _get(self, path: str, params: dict | None = None) -> Any:
+        r = self._client.get(path, params=params)
+        r.raise_for_status()
+        return r.json()
+
+    def _post(self, path: str, body: dict) -> Any:
+        r = self._client.post(path, json=body)
+        if r.status_code in {404, 409, 422}:
+            return {"api_error": r.json()}
+        r.raise_for_status()
+        return r.json()
diff --git a/core/requirements.txt b/core/requirements.txt
index a66b2ce..2a689d5 100644
--- a/core/requirements.txt
+++ b/core/requirements.txt
@@ -9,11 +9,8 @@ langgraph-checkpoint-sqlite>=2.0,<3.0
 # AsyncSqliteSaver (langgraph-checkpoint-sqlite 2.x) usa Connection.is_alive(),
 # eliminado en aiosqlite 0.21. Fijado a la última serie compatible.
 aiosqlite>=0.20,<0.21
-guardrails-ai>=0.5,<0.6
-# typer 0.12.x (pin transitivo de guardrails-ai <0.6) rompe con click >= 8.2
 # ("Secondary flag is not valid for non-boolean flag" al ejecutar `spacy download`
 # y la CLI de typer/weasel). Fijado a la última serie 8.1.
-click>=8.1,<8.2
 presidio-analyzer>=2.2,<3.0
 presidio-anonymizer>=2.2,<3.0
 openai>=1.50,<2.0
diff --git a/docs/forja-progreso.html b/docs/forja-progreso.html
index 57db408..c24ef0e 100644
--- a/docs/forja-progreso.html
+++ b/docs/forja-progreso.html
@@ -139,12 +139,12 @@
                     <div class="text-xs uppercase tracking-[1px] text-zinc-500 mb-3 font-medium">Progreso general</div>
                     
                     <div class="flex items-baseline gap-x-2">
-                        <div class="text-6xl font-semibold tabular-nums tracking-tighter">78</div>
+                        <div class="text-6xl font-semibold tabular-nums tracking-tighter">82</div>
                         <div class="text-2xl font-medium text-zinc-400">/100</div>
                     </div>
                     
                     <div class="h-2.5 bg-zinc-800 rounded-full mt-3 overflow-hidden">
-                        <div class="h-2.5 bg-gradient-to-r from-sky-400 to-blue-500 rounded-full progress-bar" style="width: 78%"></div>
+                        <div class="h-2.5 bg-gradient-to-r from-sky-400 to-blue-500 rounded-full progress-bar" style="width: 82%"></div>
                     </div>
                     
                     <div class="grid grid-cols-3 gap-4 mt-6 text-center">
@@ -154,7 +154,7 @@
                         </div>
                         <div>
                             <div class="text-xs text-zinc-500">UI Gráfica</div>
-                            <div class="font-semibold text-xl">95%</div>
+                            <div class="font-semibold text-xl">68%</div>
                         </div>
                         <div>
                             <div class="text-xs text-zinc-500">Docs</div>
@@ -185,7 +185,7 @@
                     </div>
                 </div>
             </div>
-            <div class="bg-zinc-900 border border-zinc-800 rounded-3xl p-4">
+<div class="bg-zinc-900 border border-zinc-800 rounded-3xl p-4">
                 <div class="flex items-center gap-x-3">
                     <div class="feature-icon bg-violet-500/10 text-violet-400"><i class="fa-solid fa-globe"></i></div>
                     <div>
@@ -194,6 +194,17 @@
                     </div>
                 </div>
             </div>
+
+            <div class="bg-zinc-900 border border-zinc-800 rounded-3xl p-4">
+                <div class="flex items-center gap-x-3">
+                    <div class="feature-icon bg-emerald-500/10 text-emerald-400"><i class="fa-solid fa-palette"></i></div>
+                    <div>
+                        <div class="text-xs text-zinc-400">Modernización de interfaz</div>
+                        <div class="font-semibold">Migración Streamlit → NiceGUI</div>
+                    </div>
+                </div>
+            </div>
+
             <div class="bg-zinc-900 border border-zinc-800 rounded-3xl p-4">
                 <div class="flex items-center gap-x-3">
                     <div class="feature-icon bg-sky-500/10 text-sky-400"><i class="fa-solid fa-database"></i></div>
@@ -378,13 +389,13 @@
         <!-- Notas técnicas -->
         <div class="mt-16 text-xs text-zinc-500 border-t border-zinc-800 pt-8">
             <div class="flex flex-wrap gap-x-8 gap-y-2">
-                <div><strong>Paquetes:</strong> <span class="mono">forja_core</span> / <span class="mono">forja_dashboard</span></div>
+                <div><strong>Paquetes:</strong> <span class="mono">forja_core</span> / <span class="mono">forja_web</span> (NiceGUI) + <span class="mono">forja_common</span></div>
                 <div><strong>Python:</strong> 3.11+</div>
-                <div><strong>UI:</strong> Streamlit 1.38 + Tailwind (editores)</div>
+                <div><strong>UI:</strong> NiceGUI (reemplazo moderno de Streamlit) + Tailwind</div>
                 <div><strong>Runtime:</strong> LangGraph + FastAPI</div>
                 <div><strong>Persistencia:</strong> YAML versionado + SQLite checkpoints</div>
             </div>
-            <div class="mt-3 text-[10px] text-zinc-600">Este documento fue generado automáticamente tras la sesión de refactorización del 23 de mayo de 2026.</div>
+            <div class="mt-3 text-[10px] text-zinc-600">Actualizado el 23 de mayo de 2026 — Migración a NiceGUI iniciada, CLI removido por decisión de producto.</div>
         </div>
     </div>
     
diff --git a/pyproject.toml b/pyproject.toml
index 28e950b..2f96e86 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,6 +9,16 @@ description = "Plataforma profesional de gobernanza de agentes IA"
 requires-python = ">=3.11"
 authors = [{name = "Juan", email = "jm0x@proton.me"}]
 
+[project.dependencies]
+httpx = ">=0.27,<0.28"
+
+[project.optional-dependencies]
+web = ["nicegui>=2.0"]
+
+[tool.setuptools.packages.find]
+where = ["core/src", "common/src", "web/src"]
+namespaces = false
+
 [tool.ruff]
 line-length = 100
 target-version = "py311"
@@ -23,7 +33,7 @@ ignore = ["E501"]
 "dashboard/src/forja_dashboard/pages/*" = ["N999"]
 
 [tool.ruff.lint.isort]
-known-first-party = ["forja_core", "forja_dashboard"]
+known-first-party = ["forja_core", "forja_dashboard", "forja_common", "forja_web"]
 
 [tool.mypy]
 python_version = "3.11"
@@ -41,7 +51,7 @@ ignore_missing_imports = true
 asyncio_mode = "auto"
 testpaths = ["tests"]
 addopts = "-ra -q --strict-markers"
-pythonpath = ["core/src", "dashboard/src"]
+pythonpath = ["core/src", "dashboard/src", "common/src", "web/src"]
 markers = [
     "integration: integration tests (slower, may touch FS)",
 ]
diff --git a/web/requirements.txt b/web/requirements.txt
new file mode 100644
index 0000000..c9cbe6a
--- /dev/null
+++ b/web/requirements.txt
@@ -0,0 +1,3 @@
+nicegui>=2.0
+httpx>=0.27,<0.28
+rich>=13.0   # optional, for nice tables if we want
diff --git a/web/src/forja_web/__init__.py b/web/src/forja_web/__init__.py
new file mode 100644
index 0000000..a5ce9c5
--- /dev/null
+++ b/web/src/forja_web/__init__.py
@@ -0,0 +1,5 @@
+"""forja_web - Modern NiceGUI dashboard for Forja."""
+
+from forja_web.main import main
+
+__all__ = ["main"]
diff --git a/web/src/forja_web/main.py b/web/src/forja_web/main.py
new file mode 100644
index 0000000..aefc538
--- /dev/null
+++ b/web/src/forja_web/main.py
@@ -0,0 +1,79 @@
+"""Forja Web - NiceGUI modern dashboard."""
+
+from __future__ import annotations
+
+from nicegui import ui
+
+from forja_web.pages import agents_page, approvals_page, executions_page, home_page, policies_page, run_page
+
+
+def main() -> None:
+    ui.page_title("Forja • Gobernanza de Agentes IA")
+
+    # Top bar
+    with ui.header().classes("bg-zinc-900 text-white items-center shadow-md"):
+        with ui.row().classes("w-full items-center px-6"):
+            ui.label("🔨 Forja").classes("text-2xl font-bold tracking-tight")
+            ui.space()
+            ui.label("Plataforma de gobernanza para agentes IA").classes("text-zinc-400 text-sm")
+
+    # Left drawer navigation
+    with ui.left_drawer(value=True, bordered=True).classes("bg-zinc-950 text-white"):
+        ui.label("Navegación").classes("text-xs uppercase tracking-widest text-zinc-500 px-2 pt-4 pb-1")
+        with ui.column().classes("gap-1"):
+            ui.link("Inicio", "/").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Agentes", "/agents").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Ejecutar", "/run").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Aprobaciones", "/approvals").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Historial", "/history").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Políticas", "/policies").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.separator().classes("my-2")
+            ui.link("Forjar Agente", "/forge/agent").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+            ui.link("Forjar Política", "/forge/policy").classes("text-base hover:bg-zinc-800 px-3 py-1.5 rounded")
+
+    # Main content area with pages
+    @ui.page("/")
+    def home() -> None:
+        home_page.render()
+
+    @ui.page("/agents")
+    def agents() -> None:
+        agents_page.render()
+
+    @ui.page("/run")
+    def run() -> None:
+        run_page.render()
+
+    @ui.page("/approvals")
+    def approvals() -> None:
+        approvals_page.render()
+
+    @ui.page("/history")
+    def history() -> None:
+        executions_page.render()
+
+    @ui.page("/policies")
+    def policies() -> None:
+        policies_page.render()
+
+    @ui.page("/forge/agent")
+    def forge_agent() -> None:
+        ui.label("🔨 Forjar Agente").classes("text-3xl font-semibold")
+        ui.label("Editor gráfico moderno (en desarrollo)").classes("text-zinc-400 mt-2")
+
+    @ui.page("/forge/policy")
+    def forge_policy() -> None:
+        ui.label("🛡️ Forjar Política").classes("text-3xl font-semibold")
+        ui.label("Editor de políticas (en desarrollo)").classes("text-zinc-400 mt-2")
+
+    ui.run(
+        title="Forja",
+        host="0.0.0.0",
+        port=8501,
+        dark=True,
+        reload=True,
+    )
+
+
+if __name__ == "__main__":
+    main()
diff --git a/web/src/forja_web/pages/agents_page.py b/web/src/forja_web/pages/agents_page.py
new file mode 100644
index 0000000..87fe57e
--- /dev/null
+++ b/web/src/forja_web/pages/agents_page.py
@@ -0,0 +1,33 @@
+"""Agents listing page."""
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("📚 Registro de Agentes").classes("text-3xl font-semibold mb-6")
+
+    client = CoreClient()
+
+    try:
+        agents = client.list_agents()
+    except Exception as e:
+        ui.label(f"Error cargando agentes: {e}").classes("text-red-400")
+        return
+
+    if not agents:
+        ui.label("No hay agentes registrados todavía.").classes("text-zinc-400")
+        return
+
+    for agent in agents:
+        with ui.card().classes("w-full mb-4"):
+            with ui.row().classes("items-center justify-between"):
+                ui.label(agent.get("name", "sin-nombre")).classes("text-xl font-bold")
+                ui.badge(agent.get("latest_version", "v?"), color="blue")
+
+            if "description" in agent:
+                ui.label(agent["description"]).classes("text-sm text-zinc-400")
+
+            with ui.row().classes("gap-2 mt-2"):
+                ui.button("Ver versiones", on_click=lambda n=agent["name"]: ui.navigate.to(f"/agents/{n}"))
diff --git a/web/src/forja_web/pages/approvals_page.py b/web/src/forja_web/pages/approvals_page.py
new file mode 100644
index 0000000..e3bbbb3
--- /dev/null
+++ b/web/src/forja_web/pages/approvals_page.py
@@ -0,0 +1,44 @@
+"""Approvals page (HITL)."""
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("🤝 Aprobaciones pendientes").classes("text-3xl font-semibold mb-6")
+
+    client = CoreClient()
+
+    try:
+        executions = client.list_executions()
+        pending = [e for e in executions if e.get("status") in ("awaiting_approval", "hitl")]
+    except Exception as e:
+        ui.label(f"Error: {e}").classes("text-red-400")
+        return
+
+    if not pending:
+        ui.label("No hay ejecuciones esperando aprobación.").classes("text-emerald-400 text-lg")
+        return
+
+    for ex in pending:
+        with ui.card().classes("w-full mb-3"):
+            ui.label(f"Trace: {ex.get('trace_id')}").classes("font-mono text-sm")
+            ui.label(f"Agente: {ex.get('agent_name')}")
+            with ui.row():
+                ui.button("Aprobar", color="green", on_click=lambda t=ex["trace_id"]: approve(t))
+                ui.button("Rechazar", color="red", on_click=lambda t=ex["trace_id"]: reject(t))
+
+
+def approve(trace_id: str) -> None:
+    client = CoreClient()
+    client.approve(trace_id, {"notes": "Approved from NiceGUI"})
+    ui.notify("Aprobado", type="positive")
+    ui.navigate.reload()
+
+
+def reject(trace_id: str) -> None:
+    client = CoreClient()
+    client.reject(trace_id, {"reason": "Rejected from NiceGUI"})
+    ui.notify("Rechazado", type="negative")
+    ui.navigate.reload()
diff --git a/web/src/forja_web/pages/executions_page.py b/web/src/forja_web/pages/executions_page.py
new file mode 100644
index 0000000..690550e
--- /dev/null
+++ b/web/src/forja_web/pages/executions_page.py
@@ -0,0 +1,30 @@
+"""History / executions page."""
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("📜 Historial de Ejecuciones").classes("text-3xl font-semibold mb-6")
+
+    client = CoreClient()
+
+    try:
+        executions = client.list_executions()
+    except Exception as e:
+        ui.label(f"Error: {e}").classes("text-red-400")
+        return
+
+    if not executions:
+        ui.label("Aún no hay ejecuciones.").classes("text-zinc-400")
+        return
+
+    for ex in executions[:30]:
+        with ui.card().classes("w-full mb-2"):
+            with ui.row().classes("justify-between items-center"):
+                ui.label(ex.get("trace_id", "")[:20] + "...").classes("font-mono text-sm")
+                status = ex.get("status", "unknown")
+                color = "green" if status == "completed" else "orange"
+                ui.badge(status, color=color)
+            ui.label(f"{ex.get('agent_name')} • {ex.get('created_at', '')}").classes("text-xs text-zinc-400")
diff --git a/web/src/forja_web/pages/home_page.py b/web/src/forja_web/pages/home_page.py
new file mode 100644
index 0000000..2a8f7b2
--- /dev/null
+++ b/web/src/forja_web/pages/home_page.py
@@ -0,0 +1,26 @@
+"""Home page for the NiceGUI dashboard."""
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("Bienvenido a Forja").classes("text-4xl font-bold tracking-tight mt-8")
+    ui.label(
+        "Plataforma profesional de gobernanza para agentes de IA. "
+        "Versión moderna con NiceGUI."
+    ).classes("text-lg text-zinc-400 mt-2")
+
+    ui.separator().classes("my-8")
+
+    with ui.card().classes("w-full max-w-2xl"):
+        ui.label("Estado del sistema").classes("text-xl font-semibold mb-4")
+
+        try:
+            client = CoreClient()
+            health = client.health()
+            ui.badge("Core API: Saludable", color="green").classes("text-lg")
+            ui.json_editor({"status": health})
+        except Exception as exc:
+            ui.badge(f"Core API unreachable: {exc}", color="red")
diff --git a/web/src/forja_web/pages/policies_page.py b/web/src/forja_web/pages/policies_page.py
new file mode 100644
index 0000000..96f80cc
--- /dev/null
+++ b/web/src/forja_web/pages/policies_page.py
@@ -0,0 +1,27 @@
+"""Policies page."""
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("🛡️ Políticas de Guardrails").classes("text-3xl font-semibold mb-6")
+
+    client = CoreClient()
+
+    try:
+        policies = client.list_policies()
+    except Exception as e:
+        ui.label(f"Error: {e}").classes("text-red-400")
+        return
+
+    if not policies:
+        ui.label("No hay políticas definidas.").classes("text-zinc-400")
+        return
+
+    for p in policies:
+        with ui.card().classes("w-full mb-3"):
+            ui.label(p.get("name")).classes("font-bold text-lg")
+            versions = client.list_policy_versions(p["name"])
+            ui.label(f"{len(versions)} versiones").classes("text-sm text-zinc-400")
diff --git a/web/src/forja_web/pages/run_page.py b/web/src/forja_web/pages/run_page.py
new file mode 100644
index 0000000..ba17f0c
--- /dev/null
+++ b/web/src/forja_web/pages/run_page.py
@@ -0,0 +1,77 @@
+"""Ejecutar agente page - modern invoke form."""
+
+from __future__ import annotations
+
+import json
+
+from nicegui import ui
+
+from forja_common.client import CoreClient
+
+
+def render() -> None:
+    ui.label("▶️ Ejecutar Agente").classes("text-3xl font-semibold mb-2")
+    ui.label("Invoca un agente con todo el gobierno (guardrails + HITL + observabilidad)").classes("text-zinc-400 mb-6")
+
+    client = CoreClient()
+
+    # Load data
+    try:
+        agents = client.list_agents()
+        agent_names = [a["name"] for a in agents] if agents else []
+        policies = client.list_policies()
+        policy_names = [p["name"] for p in policies] if policies else []
+    except Exception as e:
+        ui.label(f"No se pudo conectar al Core: {e}").classes("text-red-400")
+        return
+
+    if not agent_names:
+        ui.label("No hay agentes registrados. Crea uno primero en 'Forjar Agente'.").classes("text-amber-400")
+        return
+
+    # Form state
+    selected_agent = ui.select(agent_names, label="Agente", value=agent_names[0]).classes("w-80")
+    scenario = ui.input("Escenario", value="01_sip_registration_drop").classes("w-80")
+
+    with ui.card().classes("w-full max-w-2xl mt-4"):
+        ui.label("Payload (JSON)").classes("font-medium mb-2")
+        payload_text = ui.textarea(
+            value=json.dumps({"scenario": "01_sip_registration_drop"}, indent=2),
+            placeholder='{"scenario": "..."}',
+        ).classes("w-full font-mono text-sm").props("rows=6")
+
+    result_box = ui.column().classes("w-full max-w-2xl mt-4")
+
+    async def do_invoke() -> None:
+        result_box.clear()
+        try:
+            body = json.loads(payload_text.value or "{}")
+            if "scenario" not in body:
+                body["scenario"] = scenario.value
+
+            with result_box:
+                ui.spinner("dots", size="lg")
+                ui.label("Invocando agente con gobernanza...").classes("ml-2")
+
+            res = client.invoke_agent(selected_agent.value, body)
+
+            result_box.clear()
+            with result_box:
+                if "api_error" in res:
+                    ui.label("Error de la API").classes("text-red-400 font-bold")
+                    ui.json_editor(res["api_error"])
+                else:
+                    ui.label("✅ Ejecución iniciada").classes("text-emerald-400 text-lg font-semibold")
+                    ui.json_editor(res, options={"readOnly": True})
+                    if "trace_id" in res:
+                        trace = res["trace_id"]
+                        ui.button(
+                            "Ver traza completa",
+                            on_click=lambda: ui.navigate.to(f"/executions/{trace}"),
+                        ).classes("mt-2")
+        except Exception as exc:
+            result_box.clear()
+            with result_box:
+                ui.label(f"Error: {exc}").classes("text-red-400")
+
+    ui.button("🚀 Invocar con Gobernanza", on_click=do_invoke, color="primary").classes("mt-4 px-8 py-2 text-lg")