diff --git a/pkg/api/ui/dist/.gitkeep b/pkg/api/ui/dist/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/pkg/api/ui/dist/core-scm.js b/pkg/api/ui/dist/core-scm.js
new file mode 100644
index 0000000..df348a3
--- /dev/null
+++ b/pkg/api/ui/dist/core-scm.js
@@ -0,0 +1,2007 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+const J = globalThis, ie = J.ShadowRoot && (J.ShadyCSS === void 0 || J.ShadyCSS.nativeShadow) && "adoptedStyleSheets" in Document.prototype && "replace" in CSSStyleSheet.prototype, re = Symbol(), ne = /* @__PURE__ */ new WeakMap();
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+    this.cssText = e, this.t = s;
+  }
+  get styleSheet() {
+    let e = this.o;
+    const s = this.t;
+    if (ie && e === void 0) {
+      const r = s !== void 0 && s.length === 1;
+      r && (e = ne.get(s)), e === void 0 && ((this.o = e = new CSSStyleSheet()).replaceSync(this.cssText), r && ne.set(s, e));
+    }
+    return e;
+  }
+  toString() {
+    return this.cssText;
+  }
+};
+const xe = (t) => new ye(typeof t == "string" ? t : t + "", void 0, re), W = (t, ...e) => {
+  const s = t.length === 1 ? t[0] : e.reduce((r, i, o) => r + ((a) => {
+    if (a._$cssResult$ === !0) return a.cssText;
+    if (typeof a == "number") return a;
+    throw Error("Value passed to 'css' function must be a 'css' function result: " + a + ". Use 'unsafeCSS' to pass non-literal values, but take care to ensure page security.");
+  })(i) + t[o + 1], t[0]);
+  return new ye(s, t, re);
+}, Se = (t, e) => {
+  if (ie) t.adoptedStyleSheets = e.map((s) => s instanceof CSSStyleSheet ? s : s.styleSheet);
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+    const r = document.createElement("style"), i = J.litNonce;
+    i !== void 0 && r.setAttribute("nonce", i), r.textContent = s.cssText, t.appendChild(r);
+  }
+}, le = ie ? (t) => t : (t) => t instanceof CSSStyleSheet ? ((e) => {
+  let s = "";
+  for (const r of e.cssRules) s += r.cssText;
+  return xe(s);
+})(t) : t;
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
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+      break;
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+  static createProperty(e, s = ce) {
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+    this._$AM === void 0 && (this._$Cv = e, (s = this._$AP) == null || s.call(this, e));
+  }
+}
+class G {
+  get tagName() {
+    return this.element.tagName;
+  }
+  get _$AU() {
+    return this._$AM._$AU;
+  }
+  constructor(e, s, r, i, o) {
+    this.type = 1, this._$AH = c, this._$AN = void 0, this.element = e, this.name = s, this._$AM = i, this.options = o, r.length > 2 || r[0] !== "" || r[1] !== "" ? (this._$AH = Array(r.length - 1).fill(new String()), this.strings = r) : this._$AH = c;
+  }
+  _$AI(e, s = this, r, i) {
+    const o = this.strings;
+    let a = !1;
+    if (o === void 0) e = T(this, e, s, 0), a = !L(e) || e !== this._$AH && e !== z, a && (this._$AH = e);
+    else {
+      const d = e;
+      let n, u;
+      for (e = o[0], n = 0; n < o.length - 1; n++) u = T(this, d[r + n], s, n), u === z && (u = this._$AH[n]), a || (a = !L(u) || u !== this._$AH[n]), u === c ? e = c : e !== c && (e += (u ?? "") + o[n + 1]), this._$AH[n] = u;
+    }
+    a && !i && this.j(e);
+  }
+  j(e) {
+    e === c ? this.element.removeAttribute(this.name) : this.element.setAttribute(this.name, e ?? "");
+  }
+}
+class De extends G {
+  constructor() {
+    super(...arguments), this.type = 3;
+  }
+  j(e) {
+    this.element[this.name] = e === c ? void 0 : e;
+  }
+}
+class Ie extends G {
+  constructor() {
+    super(...arguments), this.type = 4;
+  }
+  j(e) {
+    this.element.toggleAttribute(this.name, !!e && e !== c);
+  }
+}
+class je extends G {
+  constructor(e, s, r, i, o) {
+    super(e, s, r, i, o), this.type = 5;
+  }
+  _$AI(e, s = this) {
+    if ((e = T(this, e, s, 0) ?? c) === z) return;
+    const r = this._$AH, i = e === c && r !== c || e.capture !== r.capture || e.once !== r.once || e.passive !== r.passive, o = e !== c && (r === c || i);
+    i && this.element.removeEventListener(this.name, this, r), o && this.element.addEventListener(this.name, this, e), this._$AH = e;
+  }
+  handleEvent(e) {
+    var s;
+    typeof this._$AH == "function" ? this._$AH.call(((s = this.options) == null ? void 0 : s.host) ?? this.element, e) : this._$AH.handleEvent(e);
+  }
+}
+class Le {
+  constructor(e, s, r) {
+    this.element = e, this.type = 6, this._$AN = void 0, this._$AM = s, this.options = r;
+  }
+  get _$AU() {
+    return this._$AM._$AU;
+  }
+  _$AI(e) {
+    T(this, e);
+  }
+}
+const te = I.litHtmlPolyfillSupport;
+te == null || te(q, V), (I.litHtmlVersions ?? (I.litHtmlVersions = [])).push("3.3.2");
+const qe = (t, e, s) => {
+  const r = (s == null ? void 0 : s.renderBefore) ?? e;
+  let i = r._$litPart$;
+  if (i === void 0) {
+    const o = (s == null ? void 0 : s.renderBefore) ?? null;
+    r._$litPart$ = i = new V(e.insertBefore(j(), o), o, void 0, s ?? {});
+  }
+  return i._$AI(t), i;
+};
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+const P = globalThis;
+class y extends R {
+  constructor() {
+    super(...arguments), this.renderOptions = { host: this }, this._$Do = void 0;
+  }
+  createRenderRoot() {
+    var s;
+    const e = super.createRenderRoot();
+    return (s = this.renderOptions).renderBefore ?? (s.renderBefore = e.firstChild), e;
+  }
+  update(e) {
+    const s = this.render();
+    this.hasUpdated || (this.renderOptions.isConnected = this.isConnected), super.update(e), this._$Do = qe(s, this.renderRoot, this.renderOptions);
+  }
+  connectedCallback() {
+    var e;
+    super.connectedCallback(), (e = this._$Do) == null || e.setConnected(!0);
+  }
+  disconnectedCallback() {
+    var e;
+    super.disconnectedCallback(), (e = this._$Do) == null || e.setConnected(!1);
+  }
+  render() {
+    return z;
+  }
+}
+var ve;
+y._$litElement$ = !0, y.finalized = !0, (ve = P.litElementHydrateSupport) == null || ve.call(P, { LitElement: y });
+const se = P.litElementPolyfillSupport;
+se == null || se({ LitElement: y });
+(P.litElementVersions ?? (P.litElementVersions = [])).push("4.2.2");
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+const B = (t) => (e, s) => {
+  s !== void 0 ? s.addInitializer(() => {
+    customElements.define(t, e);
+  }) : customElements.define(t, e);
+};
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+const We = { attribute: !0, type: String, converter: Q, reflect: !1, hasChanged: ae }, Ve = (t = We, e, s) => {
+  const { kind: r, metadata: i } = s;
+  let o = globalThis.litPropertyMetadata.get(i);
+  if (o === void 0 && globalThis.litPropertyMetadata.set(i, o = /* @__PURE__ */ new Map()), r === "setter" && ((t = Object.create(t)).wrapped = !0), o.set(s.name, t), r === "accessor") {
+    const { name: a } = s;
+    return { set(d) {
+      const n = e.get.call(this);
+      e.set.call(this, d), this.requestUpdate(a, n, t, !0, d);
+    }, init(d) {
+      return d !== void 0 && this.C(a, void 0, t, d), d;
+    } };
+  }
+  if (r === "setter") {
+    const { name: a } = s;
+    return function(d) {
+      const n = this[a];
+      e.call(this, d), this.requestUpdate(a, n, t, !0, d);
+    };
+  }
+  throw Error("Unsupported decorator location: " + r);
+};
+function $(t) {
+  return (e, s) => typeof s == "object" ? Ve(t, e, s) : ((r, i, o) => {
+    const a = i.hasOwnProperty(o);
+    return i.constructor.createProperty(o, r), a ? Object.getOwnPropertyDescriptor(i, o) : void 0;
+  })(t, e, s);
+}
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+function p(t) {
+  return $({ ...t, state: !0, attribute: !1 });
+}
+function Be(t, e) {
+  const s = new WebSocket(t);
+  return s.onmessage = (r) => {
+    var i, o, a, d;
+    try {
+      const n = JSON.parse(r.data);
+      ((o = (i = n.type) == null ? void 0 : i.startsWith) != null && o.call(i, "scm.") || (d = (a = n.channel) == null ? void 0 : a.startsWith) != null && d.call(a, "scm.")) && e(n);
+    } catch {
+    }
+  }, s;
+}
+class X {
+  constructor(e = "") {
+    this.baseUrl = e;
+  }
+  get base() {
+    return `${this.baseUrl}/api/v1/scm`;
+  }
+  async request(e, s) {
+    var o, a;
+    const r = await fetch(`${this.base}${e}`, s), i = await r.json().catch(() => null);
+    if (!r.ok)
+      throw new Error(((o = i == null ? void 0 : i.error) == null ? void 0 : o.message) ?? `Request failed (${r.status})`);
+    if (!(i != null && i.success))
+      throw new Error(((a = i == null ? void 0 : i.error) == null ? void 0 : a.message) ?? "Request failed");
+    return i.data;
+  }
+  marketplace(e, s) {
+    const r = new URLSearchParams();
+    e && r.set("q", e), s && r.set("category", s);
+    const i = r.toString();
+    return this.request(`/marketplace${i ? `?${i}` : ""}`);
+  }
+  marketplaceItem(e) {
+    return this.request(`/marketplace/${encodeURIComponent(e)}`);
+  }
+  install(e) {
+    return this.request(`/marketplace/${encodeURIComponent(e)}/install`, { method: "POST" });
+  }
+  remove(e) {
+    return this.request(`/marketplace/${encodeURIComponent(e)}`, { method: "DELETE" });
+  }
+  installed() {
+    return this.request("/installed");
+  }
+  updateInstalled(e) {
+    return this.request(`/installed/${encodeURIComponent(e)}/update`, { method: "POST" });
+  }
+  manifest() {
+    return this.request("/manifest");
+  }
+  verify(e) {
+    return this.request("/manifest/verify", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ public_key: e })
+    });
+  }
+  sign(e) {
+    return this.request("/manifest/sign", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ private_key: e })
+    });
+  }
+  permissions() {
+    return this.request("/manifest/permissions");
+  }
+  registry() {
+    return this.request("/registry");
+  }
+}
+var Fe = Object.defineProperty, Ke = Object.getOwnPropertyDescriptor, b = (t, e, s, r) => {
+  for (var i = r > 1 ? void 0 : r ? Ke(e, s) : e, o = t.length - 1, a; o >= 0; o--)
+    (a = t[o]) && (i = (r ? a(e, s, i) : a(i)) || i);
+  return r && i && Fe(e, s, i), i;
+};
+let m = class extends y {
+  constructor() {
+    super(...arguments), this.apiUrl = "", this.category = "", this.modules = [], this.categories = [], this.searchQuery = "", this.activeCategory = "", this.loading = !0, this.error = "", this.installing = /* @__PURE__ */ new Set();
+  }
+  connectedCallback() {
+    super.connectedCallback(), this.api = new X(this.apiUrl), this.activeCategory = this.category, this.loadModules();
+  }
+  async loadModules() {
+    this.loading = !0, this.error = "";
+    try {
+      this.modules = await this.api.marketplace(
+        this.searchQuery || void 0,
+        this.activeCategory || void 0
+      );
+      const t = /* @__PURE__ */ new Set();
+      this.modules.forEach((e) => {
+        e.category && t.add(e.category);
+      }), this.categories = Array.from(t).sort();
+    } catch (t) {
+      this.error = t.message ?? "Failed to load marketplace";
+    } finally {
+      this.loading = !1;
+    }
+  }
+  async refresh() {
+    await this.loadModules();
+  }
+  handleSearch(t) {
+    this.searchQuery = t.target.value, this.loadModules();
+  }
+  handleCategoryClick(t) {
+    this.activeCategory = this.activeCategory === t ? "" : t, this.loadModules();
+  }
+  async handleInstall(t) {
+    this.installing = /* @__PURE__ */ new Set([...this.installing, t]);
+    try {
+      await this.api.install(t), this.dispatchEvent(
+        new CustomEvent("scm-installed", { detail: { code: t }, bubbles: !0 })
+      );
+    } catch (e) {
+      this.error = e.message ?? "Installation failed";
+    } finally {
+      const e = new Set(this.installing);
+      e.delete(t), this.installing = e;
+    }
+  }
+  async handleRemove(t) {
+    try {
+      await this.api.remove(t), this.dispatchEvent(
+        new CustomEvent("scm-removed", { detail: { code: t }, bubbles: !0 })
+      );
+    } catch (e) {
+      this.error = e.message ?? "Removal failed";
+    }
+  }
+  render() {
+    return l`
+      <div class="toolbar">
+        <input
+          type="text"
+          class="search"
+          placeholder="Search providers\u2026"
+          .value=${this.searchQuery}
+          @input=${this.handleSearch}
+        />
+      </div>
+
+      ${this.categories.length > 0 ? l`
+            <div class="categories">
+              ${this.categories.map(
+      (t) => l`
+                  <button
+                    class="category-btn ${this.activeCategory === t ? "active" : ""}"
+                    @click=${() => this.handleCategoryClick(t)}
+                  >
+                    ${t}
+                  </button>
+                `
+    )}
+            </div>
+          ` : c}
+      ${this.error ? l`<div class="error">${this.error}</div>` : c}
+      ${this.loading ? l`<div class="loading">Loading marketplace\u2026</div>` : this.modules.length === 0 ? l`<div class="empty">No providers found.</div>` : l`
+              <div class="grid">
+                ${this.modules.map(
+      (t) => l`
+                    <div class="card">
+                      <div class="card-header">
+                        <div>
+                          <div class="card-name">${t.name}</div>
+                          <div class="card-code">${t.code}</div>
+                        </div>
+                        ${t.category ? l`<span class="card-category">${t.category}</span>` : c}
+                      </div>
+                      <div class="card-actions">
+                        <button
+                          class="install"
+                          ?disabled=${this.installing.has(t.code)}
+                          @click=${() => this.handleInstall(t.code)}
+                        >
+                          ${this.installing.has(t.code) ? "Installing…" : "Install"}
+                        </button>
+                        <button class="remove" @click=${() => this.handleRemove(t.code)}>
+                          Remove
+                        </button>
+                      </div>
+                    </div>
+                  `
+    )}
+              </div>
+            `}
+    `;
+  }
+};
+m.styles = W`
+    :host {
+      display: block;
+      font-family: system-ui, -apple-system, sans-serif;
+    }
+
+    .toolbar {
+      display: flex;
+      gap: 0.5rem;
+      align-items: center;
+      margin-bottom: 1rem;
+    }
+
+    .search {
+      flex: 1;
+      padding: 0.5rem 0.75rem;
+      border: 1px solid #d1d5db;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+      outline: none;
+    }
+
+    .search:focus {
+      border-colour: #6366f1;
+      box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
+    }
+
+    .categories {
+      display: flex;
+      gap: 0.25rem;
+      flex-wrap: wrap;
+    }
+
+    .category-btn {
+      padding: 0.25rem 0.75rem;
+      border: 1px solid #e5e7eb;
+      border-radius: 1rem;
+      background: #fff;
+      font-size: 0.75rem;
+      cursor: pointer;
+      transition: all 0.15s;
+    }
+
+    .category-btn:hover {
+      background: #f3f4f6;
+    }
+
+    .category-btn.active {
+      background: #6366f1;
+      colour: #fff;
+      border-colour: #6366f1;
+    }
+
+    .grid {
+      display: grid;
+      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
+      gap: 1rem;
+      margin-top: 1rem;
+    }
+
+    .card {
+      border: 1px solid #e5e7eb;
+      border-radius: 0.5rem;
+      padding: 1rem;
+      background: #fff;
+      transition: box-shadow 0.15s;
+    }
+
+    .card:hover {
+      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
+    }
+
+    .card-header {
+      display: flex;
+      justify-content: space-between;
+      align-items: flex-start;
+      margin-bottom: 0.5rem;
+    }
+
+    .card-name {
+      font-weight: 600;
+      font-size: 0.9375rem;
+    }
+
+    .card-code {
+      font-size: 0.75rem;
+      colour: #6b7280;
+      font-family: monospace;
+    }
+
+    .card-category {
+      font-size: 0.6875rem;
+      padding: 0.125rem 0.5rem;
+      background: #f3f4f6;
+      border-radius: 1rem;
+      colour: #6b7280;
+    }
+
+    .card-actions {
+      margin-top: 0.75rem;
+      display: flex;
+      gap: 0.5rem;
+    }
+
+    button.install {
+      padding: 0.375rem 1rem;
+      background: #6366f1;
+      colour: #fff;
+      border: none;
+      border-radius: 0.375rem;
+      font-size: 0.8125rem;
+      cursor: pointer;
+      transition: background 0.15s;
+    }
+
+    button.install:hover {
+      background: #4f46e5;
+    }
+
+    button.install:disabled {
+      opacity: 0.5;
+      cursor: not-allowed;
+    }
+
+    button.remove {
+      padding: 0.375rem 1rem;
+      background: #fff;
+      colour: #dc2626;
+      border: 1px solid #dc2626;
+      border-radius: 0.375rem;
+      font-size: 0.8125rem;
+      cursor: pointer;
+    }
+
+    button.remove:hover {
+      background: #fef2f2;
+    }
+
+    .empty {
+      text-align: center;
+      padding: 2rem;
+      colour: #9ca3af;
+      font-size: 0.875rem;
+    }
+
+    .loading {
+      text-align: center;
+      padding: 2rem;
+      colour: #6b7280;
+    }
+
+    .error {
+      colour: #dc2626;
+      padding: 0.75rem;
+      background: #fef2f2;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+    }
+  `;
+b([
+  $({ attribute: "api-url" })
+], m.prototype, "apiUrl", 2);
+b([
+  $()
+], m.prototype, "category", 2);
+b([
+  p()
+], m.prototype, "modules", 2);
+b([
+  p()
+], m.prototype, "categories", 2);
+b([
+  p()
+], m.prototype, "searchQuery", 2);
+b([
+  p()
+], m.prototype, "activeCategory", 2);
+b([
+  p()
+], m.prototype, "loading", 2);
+b([
+  p()
+], m.prototype, "error", 2);
+b([
+  p()
+], m.prototype, "installing", 2);
+m = b([
+  B("core-scm-marketplace")
+], m);
+var Je = Object.defineProperty, Qe = Object.getOwnPropertyDescriptor, M = (t, e, s, r) => {
+  for (var i = r > 1 ? void 0 : r ? Qe(e, s) : e, o = t.length - 1, a; o >= 0; o--)
+    (a = t[o]) && (i = (r ? a(e, s, i) : a(i)) || i);
+  return r && i && Je(e, s, i), i;
+};
+let x = class extends y {
+  constructor() {
+    super(...arguments), this.apiUrl = "", this.modules = [], this.loading = !0, this.error = "", this.updating = /* @__PURE__ */ new Set();
+  }
+  connectedCallback() {
+    super.connectedCallback(), this.api = new X(this.apiUrl), this.loadInstalled();
+  }
+  async loadInstalled() {
+    this.loading = !0, this.error = "";
+    try {
+      this.modules = await this.api.installed();
+    } catch (t) {
+      this.error = t.message ?? "Failed to load installed providers";
+    } finally {
+      this.loading = !1;
+    }
+  }
+  async refresh() {
+    await this.loadInstalled();
+  }
+  async handleUpdate(t) {
+    this.updating = /* @__PURE__ */ new Set([...this.updating, t]);
+    try {
+      await this.api.updateInstalled(t), await this.loadInstalled();
+    } catch (e) {
+      this.error = e.message ?? "Update failed";
+    } finally {
+      const e = new Set(this.updating);
+      e.delete(t), this.updating = e;
+    }
+  }
+  async handleRemove(t) {
+    try {
+      await this.api.remove(t), this.dispatchEvent(
+        new CustomEvent("scm-removed", { detail: { code: t }, bubbles: !0 })
+      ), await this.loadInstalled();
+    } catch (e) {
+      this.error = e.message ?? "Removal failed";
+    }
+  }
+  formatDate(t) {
+    try {
+      return new Date(t).toLocaleDateString("en-GB", {
+        day: "numeric",
+        month: "short",
+        year: "numeric"
+      });
+    } catch {
+      return t;
+    }
+  }
+  render() {
+    return this.loading ? l`<div class="loading">Loading installed providers\u2026</div>` : l`
+      ${this.error ? l`<div class="error">${this.error}</div>` : c}
+      ${this.modules.length === 0 ? l`<div class="empty">No providers installed.</div>` : l`
+            <div class="list">
+              ${this.modules.map(
+      (t) => l`
+                  <div class="item">
+                    <div class="item-info">
+                      <div class="item-name">${t.name}</div>
+                      <div class="item-meta">
+                        <span class="item-code">${t.code}</span>
+                        <span>v${t.version}</span>
+                        <span>Installed ${this.formatDate(t.installed_at)}</span>
+                      </div>
+                    </div>
+                    <div class="item-actions">
+                      <button
+                        class="update"
+                        ?disabled=${this.updating.has(t.code)}
+                        @click=${() => this.handleUpdate(t.code)}
+                      >
+                        ${this.updating.has(t.code) ? "Updating…" : "Update"}
+                      </button>
+                      <button class="remove" @click=${() => this.handleRemove(t.code)}>
+                        Remove
+                      </button>
+                    </div>
+                  </div>
+                `
+    )}
+            </div>
+          `}
+    `;
+  }
+};
+x.styles = W`
+    :host {
+      display: block;
+      font-family: system-ui, -apple-system, sans-serif;
+    }
+
+    .list {
+      display: flex;
+      flex-direction: column;
+      gap: 0.5rem;
+    }
+
+    .item {
+      border: 1px solid #e5e7eb;
+      border-radius: 0.5rem;
+      padding: 1rem;
+      background: #fff;
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      transition: box-shadow 0.15s;
+    }
+
+    .item:hover {
+      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
+    }
+
+    .item-info {
+      flex: 1;
+    }
+
+    .item-name {
+      font-weight: 600;
+      font-size: 0.9375rem;
+    }
+
+    .item-meta {
+      font-size: 0.75rem;
+      colour: #6b7280;
+      margin-top: 0.25rem;
+      display: flex;
+      gap: 1rem;
+    }
+
+    .item-code {
+      font-family: monospace;
+    }
+
+    .item-actions {
+      display: flex;
+      gap: 0.5rem;
+    }
+
+    button {
+      padding: 0.375rem 0.75rem;
+      border-radius: 0.375rem;
+      font-size: 0.8125rem;
+      cursor: pointer;
+      transition: background 0.15s;
+    }
+
+    button.update {
+      background: #fff;
+      colour: #6366f1;
+      border: 1px solid #6366f1;
+    }
+
+    button.update:hover {
+      background: #eef2ff;
+    }
+
+    button.update:disabled {
+      opacity: 0.5;
+      cursor: not-allowed;
+    }
+
+    button.remove {
+      background: #fff;
+      colour: #dc2626;
+      border: 1px solid #dc2626;
+    }
+
+    button.remove:hover {
+      background: #fef2f2;
+    }
+
+    .empty {
+      text-align: center;
+      padding: 2rem;
+      colour: #9ca3af;
+      font-size: 0.875rem;
+    }
+
+    .loading {
+      text-align: center;
+      padding: 2rem;
+      colour: #6b7280;
+    }
+
+    .error {
+      colour: #dc2626;
+      padding: 0.75rem;
+      background: #fef2f2;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+      margin-bottom: 1rem;
+    }
+  `;
+M([
+  $({ attribute: "api-url" })
+], x.prototype, "apiUrl", 2);
+M([
+  p()
+], x.prototype, "modules", 2);
+M([
+  p()
+], x.prototype, "loading", 2);
+M([
+  p()
+], x.prototype, "error", 2);
+M([
+  p()
+], x.prototype, "updating", 2);
+x = M([
+  B("core-scm-installed")
+], x);
+var Ze = Object.defineProperty, Ge = Object.getOwnPropertyDescriptor, E = (t, e, s, r) => {
+  for (var i = r > 1 ? void 0 : r ? Ge(e, s) : e, o = t.length - 1, a; o >= 0; o--)
+    (a = t[o]) && (i = (r ? a(e, s, i) : a(i)) || i);
+  return r && i && Ze(e, s, i), i;
+};
+let g = class extends y {
+  constructor() {
+    super(...arguments), this.apiUrl = "", this.path = "", this.manifest = null, this.loading = !0, this.error = "", this.verifyKey = "", this.verifyResult = null;
+  }
+  connectedCallback() {
+    super.connectedCallback(), this.api = new X(this.apiUrl), this.loadManifest();
+  }
+  async loadManifest() {
+    this.loading = !0, this.error = "";
+    try {
+      this.manifest = await this.api.manifest();
+    } catch (t) {
+      this.error = t.message ?? "Failed to load manifest";
+    } finally {
+      this.loading = !1;
+    }
+  }
+  async refresh() {
+    this.verifyResult = null, await this.loadManifest();
+  }
+  async handleVerify() {
+    if (this.verifyKey.trim())
+      try {
+        this.verifyResult = await this.api.verify(this.verifyKey.trim());
+      } catch (t) {
+        this.error = t.message ?? "Verification failed";
+      }
+  }
+  async handleSign() {
+    const t = prompt("Enter hex-encoded Ed25519 private key:");
+    if (t)
+      try {
+        await this.api.sign(t), await this.loadManifest();
+      } catch (e) {
+        this.error = e.message ?? "Signing failed";
+      }
+  }
+  renderPermissions(t) {
+    if (!t) return c;
+    const e = [
+      { label: "Read", items: t.read },
+      { label: "Write", items: t.write },
+      { label: "Network", items: t.net },
+      { label: "Run", items: t.run }
+    ].filter((s) => s.items && s.items.length > 0);
+    return e.length === 0 ? c : l`
+      <div class="field">
+        <div class="field-label">Permissions</div>
+        <div class="permissions-grid">
+          ${e.map(
+      (s) => l`
+              <div class="perm-group">
+                <div class="perm-group-label">${s.label}</div>
+                ${s.items.map((r) => l`<div class="perm-item">${r}</div>`)}
+              </div>
+            `
+    )}
+        </div>
+      </div>
+    `;
+  }
+  render() {
+    if (this.loading)
+      return l`<div class="loading">Loading manifest\u2026</div>`;
+    if (this.error && !this.manifest)
+      return l`<div class="error">${this.error}</div>`;
+    if (!this.manifest)
+      return l`<div class="empty">No manifest found. Create a .core/manifest.yaml to get started.</div>`;
+    const t = this.manifest, e = !!t.sign;
+    return l`
+      ${this.error ? l`<div class="error">${this.error}</div>` : c}
+      <div class="manifest">
+        <div class="header">
+          <div>
+            <h3>${t.name}</h3>
+            <span class="code">${t.code}</span>
+          </div>
+          <span class="version">v${t.version}</span>
+        </div>
+
+        ${t.description ? l`
+              <div class="field">
+                <div class="field-label">Description</div>
+                <div class="field-value">${t.description}</div>
+              </div>
+            ` : c}
+        ${t.layout ? l`
+              <div class="field">
+                <div class="field-label">Layout</div>
+                <div class="field-value code">${t.layout}</div>
+              </div>
+            ` : c}
+        ${t.slots && Object.keys(t.slots).length > 0 ? l`
+              <div class="field">
+                <div class="field-label">Slots</div>
+                <div class="slots">
+                  ${Object.entries(t.slots).map(
+      ([s, r]) => l`
+                      <span class="slot-key">${s}</span>
+                      <span class="slot-value">${r}</span>
+                    `
+    )}
+                </div>
+              </div>
+            ` : c}
+
+        ${this.renderPermissions(t.permissions)}
+        ${t.modules && t.modules.length > 0 ? l`
+              <div class="field">
+                <div class="field-label">Modules</div>
+                ${t.modules.map((s) => l`<div class="code" style="margin-bottom:0.25rem">${s}</div>`)}
+              </div>
+            ` : c}
+
+        <div class="signature ${e ? this.verifyResult ? this.verifyResult.valid ? "signed" : "invalid" : "signed" : "unsigned"}">
+          <span class="badge ${e && this.verifyResult ? this.verifyResult.valid ? "verified" : "invalid" : "unsigned"}">
+            ${e ? this.verifyResult ? this.verifyResult.valid ? "Verified" : "Invalid" : "Signed" : "Unsigned"}
+          </span>
+          ${e ? l`<span>Signature present</span>` : l`<span>No signature</span>`}
+        </div>
+
+        <div class="actions">
+          <input
+            type="text"
+            class="verify-input"
+            placeholder="Public key (hex)\u2026"
+            .value=${this.verifyKey}
+            @input=${(s) => this.verifyKey = s.target.value}
+          />
+          <button @click=${this.handleVerify}>Verify</button>
+          <button class="primary" @click=${this.handleSign}>Sign</button>
+        </div>
+      </div>
+    `;
+  }
+};
+g.styles = W`
+    :host {
+      display: block;
+      font-family: system-ui, -apple-system, sans-serif;
+    }
+
+    .manifest {
+      border: 1px solid #e5e7eb;
+      border-radius: 0.5rem;
+      padding: 1.25rem;
+      background: #fff;
+    }
+
+    .header {
+      display: flex;
+      justify-content: space-between;
+      align-items: flex-start;
+      margin-bottom: 1rem;
+    }
+
+    h3 {
+      margin: 0;
+      font-size: 1.125rem;
+      font-weight: 600;
+    }
+
+    .version {
+      font-size: 0.75rem;
+      padding: 0.125rem 0.5rem;
+      background: #f3f4f6;
+      border-radius: 1rem;
+      colour: #6b7280;
+    }
+
+    .field {
+      margin-bottom: 0.75rem;
+    }
+
+    .field-label {
+      font-size: 0.75rem;
+      font-weight: 600;
+      colour: #6b7280;
+      text-transform: uppercase;
+      letter-spacing: 0.025em;
+      margin-bottom: 0.25rem;
+    }
+
+    .field-value {
+      font-size: 0.875rem;
+    }
+
+    .code {
+      font-family: monospace;
+      font-size: 0.8125rem;
+      background: #f9fafb;
+      padding: 0.25rem 0.5rem;
+      border-radius: 0.25rem;
+    }
+
+    .slots {
+      display: grid;
+      grid-template-columns: auto 1fr;
+      gap: 0.25rem 1rem;
+      font-size: 0.8125rem;
+    }
+
+    .slot-key {
+      font-weight: 600;
+      colour: #374151;
+    }
+
+    .slot-value {
+      font-family: monospace;
+      colour: #6b7280;
+    }
+
+    .permissions-grid {
+      display: grid;
+      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
+      gap: 0.5rem;
+    }
+
+    .perm-group {
+      border: 1px solid #e5e7eb;
+      border-radius: 0.375rem;
+      padding: 0.5rem;
+    }
+
+    .perm-group-label {
+      font-size: 0.6875rem;
+      font-weight: 700;
+      colour: #6b7280;
+      text-transform: uppercase;
+      margin-bottom: 0.25rem;
+    }
+
+    .perm-item {
+      font-size: 0.8125rem;
+      font-family: monospace;
+      colour: #374151;
+    }
+
+    .signature {
+      display: flex;
+      align-items: center;
+      gap: 0.75rem;
+      margin-top: 1rem;
+      padding: 0.75rem;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+    }
+
+    .signature.signed {
+      background: #f0fdf4;
+      border: 1px solid #bbf7d0;
+    }
+
+    .signature.unsigned {
+      background: #fffbeb;
+      border: 1px solid #fde68a;
+    }
+
+    .signature.invalid {
+      background: #fef2f2;
+      border: 1px solid #fecaca;
+    }
+
+    .badge {
+      font-size: 0.75rem;
+      font-weight: 600;
+      padding: 0.125rem 0.5rem;
+      border-radius: 1rem;
+    }
+
+    .badge.verified {
+      background: #dcfce7;
+      colour: #166534;
+    }
+
+    .badge.unsigned {
+      background: #fef3c7;
+      colour: #92400e;
+    }
+
+    .badge.invalid {
+      background: #fee2e2;
+      colour: #991b1b;
+    }
+
+    .actions {
+      margin-top: 1rem;
+      display: flex;
+      gap: 0.5rem;
+    }
+
+    .verify-input {
+      flex: 1;
+      padding: 0.375rem 0.75rem;
+      border: 1px solid #d1d5db;
+      border-radius: 0.375rem;
+      font-size: 0.8125rem;
+      font-family: monospace;
+    }
+
+    button {
+      padding: 0.375rem 1rem;
+      border-radius: 0.375rem;
+      font-size: 0.8125rem;
+      cursor: pointer;
+      border: 1px solid #d1d5db;
+      background: #fff;
+      transition: background 0.15s;
+    }
+
+    button:hover {
+      background: #f3f4f6;
+    }
+
+    button.primary {
+      background: #6366f1;
+      colour: #fff;
+      border-colour: #6366f1;
+    }
+
+    button.primary:hover {
+      background: #4f46e5;
+    }
+
+    .empty {
+      text-align: center;
+      padding: 2rem;
+      colour: #9ca3af;
+      font-size: 0.875rem;
+    }
+
+    .error {
+      colour: #dc2626;
+      padding: 0.75rem;
+      background: #fef2f2;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+    }
+
+    .loading {
+      text-align: center;
+      padding: 2rem;
+      colour: #6b7280;
+    }
+  `;
+E([
+  $({ attribute: "api-url" })
+], g.prototype, "apiUrl", 2);
+E([
+  $()
+], g.prototype, "path", 2);
+E([
+  p()
+], g.prototype, "manifest", 2);
+E([
+  p()
+], g.prototype, "loading", 2);
+E([
+  p()
+], g.prototype, "error", 2);
+E([
+  p()
+], g.prototype, "verifyKey", 2);
+E([
+  p()
+], g.prototype, "verifyResult", 2);
+g = E([
+  B("core-scm-manifest")
+], g);
+var Xe = Object.defineProperty, Ye = Object.getOwnPropertyDescriptor, F = (t, e, s, r) => {
+  for (var i = r > 1 ? void 0 : r ? Ye(e, s) : e, o = t.length - 1, a; o >= 0; o--)
+    (a = t[o]) && (i = (r ? a(e, s, i) : a(i)) || i);
+  return r && i && Xe(e, s, i), i;
+};
+let O = class extends y {
+  constructor() {
+    super(...arguments), this.apiUrl = "", this.repos = [], this.loading = !0, this.error = "";
+  }
+  connectedCallback() {
+    super.connectedCallback(), this.api = new X(this.apiUrl), this.loadRegistry();
+  }
+  async loadRegistry() {
+    this.loading = !0, this.error = "";
+    try {
+      this.repos = await this.api.registry();
+    } catch (t) {
+      this.error = t.message ?? "Failed to load registry";
+    } finally {
+      this.loading = !1;
+    }
+  }
+  async refresh() {
+    await this.loadRegistry();
+  }
+  render() {
+    return this.loading ? l`<div class="loading">Loading registry\u2026</div>` : l`
+      ${this.error ? l`<div class="error">${this.error}</div>` : c}
+      ${this.repos.length === 0 ? l`<div class="empty">No repositories in registry.</div>` : l`
+            <div class="list">
+              ${this.repos.map(
+      (t) => l`
+                  <div class="repo">
+                    <div class="repo-info">
+                      <div class="repo-name">${t.name}</div>
+                      ${t.description ? l`<div class="repo-desc">${t.description}</div>` : c}
+                      <div class="repo-meta">
+                        <span class="type-badge ${t.type}">${t.type}</span>
+                        ${t.depends_on && t.depends_on.length > 0 ? l`<span class="deps">depends: ${t.depends_on.join(", ")}</span>` : c}
+                      </div>
+                    </div>
+                    <div class="status">
+                      <span class="status-dot ${t.exists ? "present" : "missing"}"></span>
+                      <span class="status-label">${t.exists ? "Present" : "Missing"}</span>
+                    </div>
+                  </div>
+                `
+    )}
+            </div>
+          `}
+    `;
+  }
+};
+O.styles = W`
+    :host {
+      display: block;
+      font-family: system-ui, -apple-system, sans-serif;
+    }
+
+    .list {
+      display: flex;
+      flex-direction: column;
+      gap: 0.375rem;
+    }
+
+    .repo {
+      border: 1px solid #e5e7eb;
+      border-radius: 0.5rem;
+      padding: 0.75rem 1rem;
+      background: #fff;
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+    }
+
+    .repo-info {
+      flex: 1;
+    }
+
+    .repo-name {
+      font-weight: 600;
+      font-size: 0.9375rem;
+      font-family: monospace;
+    }
+
+    .repo-desc {
+      font-size: 0.8125rem;
+      colour: #6b7280;
+      margin-top: 0.125rem;
+    }
+
+    .repo-meta {
+      display: flex;
+      gap: 0.5rem;
+      align-items: center;
+      margin-top: 0.25rem;
+    }
+
+    .type-badge {
+      font-size: 0.6875rem;
+      padding: 0.0625rem 0.5rem;
+      border-radius: 1rem;
+      font-weight: 600;
+    }
+
+    .type-badge.foundation {
+      background: #dbeafe;
+      colour: #1e40af;
+    }
+
+    .type-badge.module {
+      background: #f3e8ff;
+      colour: #6b21a8;
+    }
+
+    .type-badge.product {
+      background: #dcfce7;
+      colour: #166534;
+    }
+
+    .type-badge.template {
+      background: #fef3c7;
+      colour: #92400e;
+    }
+
+    .deps {
+      font-size: 0.75rem;
+      colour: #9ca3af;
+    }
+
+    .status {
+      display: flex;
+      align-items: center;
+      gap: 0.375rem;
+    }
+
+    .status-dot {
+      width: 0.5rem;
+      height: 0.5rem;
+      border-radius: 50%;
+    }
+
+    .status-dot.present {
+      background: #22c55e;
+    }
+
+    .status-dot.missing {
+      background: #ef4444;
+    }
+
+    .status-label {
+      font-size: 0.75rem;
+      colour: #6b7280;
+    }
+
+    .empty {
+      text-align: center;
+      padding: 2rem;
+      colour: #9ca3af;
+      font-size: 0.875rem;
+    }
+
+    .loading {
+      text-align: center;
+      padding: 2rem;
+      colour: #6b7280;
+    }
+
+    .error {
+      colour: #dc2626;
+      padding: 0.75rem;
+      background: #fef2f2;
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+      margin-bottom: 1rem;
+    }
+  `;
+F([
+  $({ attribute: "api-url" })
+], O.prototype, "apiUrl", 2);
+F([
+  p()
+], O.prototype, "repos", 2);
+F([
+  p()
+], O.prototype, "loading", 2);
+F([
+  p()
+], O.prototype, "error", 2);
+O = F([
+  B("core-scm-registry")
+], O);
+var et = Object.defineProperty, tt = Object.getOwnPropertyDescriptor, N = (t, e, s, r) => {
+  for (var i = r > 1 ? void 0 : r ? tt(e, s) : e, o = t.length - 1, a; o >= 0; o--)
+    (a = t[o]) && (i = (r ? a(e, s, i) : a(i)) || i);
+  return r && i && et(e, s, i), i;
+};
+let S = class extends y {
+  constructor() {
+    super(...arguments), this.apiUrl = "", this.wsUrl = "", this.activeTab = "marketplace", this.wsConnected = !1, this.lastEvent = "", this.ws = null, this.tabs = [
+      { id: "marketplace", label: "Marketplace" },
+      { id: "installed", label: "Installed" },
+      { id: "manifest", label: "Manifest" },
+      { id: "registry", label: "Registry" }
+    ];
+  }
+  connectedCallback() {
+    super.connectedCallback(), this.wsUrl && this.connectWs();
+  }
+  updated(t) {
+    super.updated(t), t.has("wsUrl") && this.isConnected && this.connectWs();
+  }
+  disconnectedCallback() {
+    super.disconnectedCallback(), this.disconnectWs();
+  }
+  connectWs() {
+    this.disconnectWs(), this.wsUrl && (this.ws = Be(this.wsUrl, (t) => {
+      this.lastEvent = t.channel ?? t.type ?? "", this.requestUpdate(), this.refreshForEvent(t);
+    }), this.ws.onopen = () => {
+      this.wsConnected = !0;
+    }, this.ws.onclose = () => {
+      this.wsConnected = !1;
+    });
+  }
+  disconnectWs() {
+    this.ws && (this.ws.close(), this.ws = null);
+  }
+  handleTabClick(t) {
+    this.activeTab = t;
+  }
+  async handleRefresh() {
+    await this.refreshActiveTab();
+  }
+  refreshForEvent(t) {
+    this.tabsForChannel(t.channel ?? t.type ?? "").includes(this.activeTab) && this.refreshActiveTab();
+  }
+  tabsForChannel(t) {
+    return t.startsWith("scm.marketplace.") ? ["marketplace", "installed"] : t.startsWith("scm.installed.") ? ["installed"] : t === "scm.manifest.verified" ? ["manifest"] : t === "scm.registry.changed" ? ["registry"] : [];
+  }
+  async refreshActiveTab() {
+    var e;
+    const t = (e = this.shadowRoot) == null ? void 0 : e.querySelector(".content > *");
+    t != null && t.refresh && await t.refresh();
+  }
+  renderContent() {
+    switch (this.activeTab) {
+      case "marketplace":
+        return l`<core-scm-marketplace api-url=${this.apiUrl}></core-scm-marketplace>`;
+      case "installed":
+        return l`<core-scm-installed api-url=${this.apiUrl}></core-scm-installed>`;
+      case "manifest":
+        return l`<core-scm-manifest api-url=${this.apiUrl}></core-scm-manifest>`;
+      case "registry":
+        return l`<core-scm-registry api-url=${this.apiUrl}></core-scm-registry>`;
+      default:
+        return c;
+    }
+  }
+  render() {
+    const t = this.wsUrl ? this.wsConnected ? "connected" : "disconnected" : "idle";
+    return l`
+      <div class="header">
+        <span class="title">SCM</span>
+        <button class="refresh-btn" @click=${this.handleRefresh}>Refresh</button>
+      </div>
+
+      <div class="tabs">
+        ${this.tabs.map(
+      (e) => l`
+            <button
+              class="tab ${this.activeTab === e.id ? "active" : ""}"
+              @click=${() => this.handleTabClick(e.id)}
+            >
+              ${e.label}
+            </button>
+          `
+    )}
+      </div>
+
+      <div class="content">${this.renderContent()}</div>
+
+      <div class="footer">
+        <div class="ws-status">
+          <span class="ws-dot ${t}"></span>
+          <span>${t === "connected" ? "Connected" : t === "disconnected" ? "Disconnected" : "No WebSocket"}</span>
+        </div>
+        ${this.lastEvent ? l`<span>Last: ${this.lastEvent}</span>` : c}
+      </div>
+    `;
+  }
+};
+S.styles = W`
+    :host {
+      display: flex;
+      flex-direction: column;
+      font-family: system-ui, -apple-system, sans-serif;
+      height: 100%;
+      background: #fafafa;
+    }
+
+    /* H — Header */
+    .header {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 0.75rem 1rem;
+      background: #fff;
+      border-bottom: 1px solid #e5e7eb;
+    }
+
+    .title {
+      font-weight: 700;
+      font-size: 1rem;
+      colour: #111827;
+    }
+
+    .refresh-btn {
+      padding: 0.375rem 0.75rem;
+      border: 1px solid #d1d5db;
+      border-radius: 0.375rem;
+      background: #fff;
+      font-size: 0.8125rem;
+      cursor: pointer;
+      transition: background 0.15s;
+    }
+
+    .refresh-btn:hover {
+      background: #f3f4f6;
+    }
+
+    /* H-L — Tabs */
+    .tabs {
+      display: flex;
+      gap: 0;
+      background: #fff;
+      border-bottom: 1px solid #e5e7eb;
+      padding: 0 1rem;
+    }
+
+    .tab {
+      padding: 0.625rem 1rem;
+      font-size: 0.8125rem;
+      font-weight: 500;
+      colour: #6b7280;
+      cursor: pointer;
+      border-bottom: 2px solid transparent;
+      transition: all 0.15s;
+      background: none;
+      border-top: none;
+      border-left: none;
+      border-right: none;
+    }
+
+    .tab:hover {
+      colour: #374151;
+    }
+
+    .tab.active {
+      colour: #6366f1;
+      border-bottom-colour: #6366f1;
+    }
+
+    /* C — Content */
+    .content {
+      flex: 1;
+      padding: 1rem;
+      overflow-y: auto;
+    }
+
+    /* F — Footer / Status bar */
+    .footer {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 0.5rem 1rem;
+      background: #fff;
+      border-top: 1px solid #e5e7eb;
+      font-size: 0.75rem;
+      colour: #9ca3af;
+    }
+
+    .ws-status {
+      display: flex;
+      align-items: center;
+      gap: 0.375rem;
+    }
+
+    .ws-dot {
+      width: 0.5rem;
+      height: 0.5rem;
+      border-radius: 50%;
+    }
+
+    .ws-dot.connected {
+      background: #22c55e;
+    }
+
+    .ws-dot.disconnected {
+      background: #ef4444;
+    }
+
+    .ws-dot.idle {
+      background: #d1d5db;
+    }
+  `;
+N([
+  $({ attribute: "api-url" })
+], S.prototype, "apiUrl", 2);
+N([
+  $({ attribute: "ws-url" })
+], S.prototype, "wsUrl", 2);
+N([
+  p()
+], S.prototype, "activeTab", 2);
+N([
+  p()
+], S.prototype, "wsConnected", 2);
+N([
+  p()
+], S.prototype, "lastEvent", 2);
+S = N([
+  B("core-scm-panel")
+], S);
+export {
+  X as ScmApi,
+  x as ScmInstalled,
+  g as ScmManifest,
+  m as ScmMarketplace,
+  S as ScmPanel,
+  O as ScmRegistry,
+  Be as connectScmEvents
+};
diff --git a/ui/src/scm-installed.ts b/ui/src/scm-installed.ts
index 173cf88..56cea05 100644
--- a/ui/src/scm-installed.ts
+++ b/ui/src/scm-installed.ts
@@ -162,6 +162,10 @@ export class ScmInstalled extends LitElement {
     }
   }
 
+  async refresh() {
+    await this.loadInstalled();
+  }
+
   private async handleUpdate(code: string) {
     this.updating = new Set([...this.updating, code]);
     try {
diff --git a/ui/src/scm-manifest.ts b/ui/src/scm-manifest.ts
index cb8cf77..1cbe553 100644
--- a/ui/src/scm-manifest.ts
+++ b/ui/src/scm-manifest.ts
@@ -265,6 +265,11 @@ export class ScmManifest extends LitElement {
     }
   }
 
+  async refresh() {
+    this.verifyResult = null;
+    await this.loadManifest();
+  }
+
   private async handleVerify() {
     if (!this.verifyKey.trim()) return;
     try {
diff --git a/ui/src/scm-marketplace.ts b/ui/src/scm-marketplace.ts
index ad3b94a..cee41dc 100644
--- a/ui/src/scm-marketplace.ts
+++ b/ui/src/scm-marketplace.ts
@@ -219,6 +219,10 @@ export class ScmMarketplace extends LitElement {
     }
   }
 
+  async refresh() {
+    await this.loadModules();
+  }
+
   private handleSearch(e: Event) {
     this.searchQuery = (e.target as HTMLInputElement).value;
     this.loadModules();
diff --git a/ui/src/scm-panel.ts b/ui/src/scm-panel.ts
index dd55df3..3b5978d 100644
--- a/ui/src/scm-panel.ts
+++ b/ui/src/scm-panel.ts
@@ -2,6 +2,7 @@
 
 import { LitElement, html, css, nothing } from 'lit';
 import { customElement, property, state } from 'lit/decorators.js';
+import type { PropertyValues } from 'lit';
 import { connectScmEvents, type ScmEvent } from './shared/events.js';
 
 // Side-effect imports to register child elements
@@ -11,6 +12,9 @@ import './scm-manifest.js';
 import './scm-registry.js';
 
 type TabId = 'marketplace' | 'installed' | 'manifest' | 'registry';
+type RefreshableElement = HTMLElement & {
+  refresh?: () => Promise<void> | void;
+};
 
 /**
  * <core-scm-panel> — Top-level HLCRF panel with tabs.
@@ -154,18 +158,28 @@ export class ScmPanel extends LitElement {
     }
   }
 
-  disconnectedCallback() {
-    super.disconnectedCallback();
-    if (this.ws) {
-      this.ws.close();
-      this.ws = null;
+  updated(changedProperties: PropertyValues<this>) {
+    super.updated(changedProperties);
+    if (changedProperties.has('wsUrl') && this.isConnected) {
+      this.connectWs();
     }
   }
 
+  disconnectedCallback() {
+    super.disconnectedCallback();
+    this.disconnectWs();
+  }
+
   private connectWs() {
+    this.disconnectWs();
+    if (!this.wsUrl) {
+      return;
+    }
+
     this.ws = connectScmEvents(this.wsUrl, (event: ScmEvent) => {
       this.lastEvent = event.channel ?? event.type ?? '';
       this.requestUpdate();
+      this.refreshForEvent(event);
     });
     this.ws.onopen = () => {
       this.wsConnected = true;
@@ -175,27 +189,55 @@ export class ScmPanel extends LitElement {
     };
   }
 
+  private disconnectWs() {
+    if (!this.ws) {
+      return;
+    }
+
+    this.ws.close();
+    this.ws = null;
+  }
+
   private handleTabClick(tab: TabId) {
     this.activeTab = tab;
   }
 
-  private handleRefresh() {
-    // Force re-render of active child by toggling a key
-    const content = this.shadowRoot?.querySelector('.content');
-    if (content) {
-      const child = content.firstElementChild;
-      if (child && 'loadModules' in child) {
-        (child as any).loadModules();
-      } else if (child && 'loadInstalled' in child) {
-        (child as any).loadInstalled();
-      } else if (child && 'loadManifest' in child) {
-        (child as any).loadManifest();
-      } else if (child && 'loadRegistry' in child) {
-        (child as any).loadRegistry();
-      }
+  private async handleRefresh() {
+    await this.refreshActiveTab();
+  }
+
+  private refreshForEvent(event: ScmEvent) {
+    const targets = this.tabsForChannel(event.channel ?? event.type ?? '');
+    if (targets.includes(this.activeTab)) {
+      void this.refreshActiveTab();
     }
   }
 
+  private tabsForChannel(channel: string): TabId[] {
+    if (channel.startsWith('scm.marketplace.')) {
+      return ['marketplace', 'installed'];
+    }
+    if (channel.startsWith('scm.installed.')) {
+      return ['installed'];
+    }
+    if (channel === 'scm.manifest.verified') {
+      return ['manifest'];
+    }
+    if (channel === 'scm.registry.changed') {
+      return ['registry'];
+    }
+    return [];
+  }
+
+  private async refreshActiveTab() {
+    const child = this.shadowRoot?.querySelector('.content > *') as RefreshableElement | null;
+    if (!child?.refresh) {
+      return;
+    }
+
+    await child.refresh();
+  }
+
   private renderContent() {
     switch (this.activeTab) {
       case 'marketplace':
diff --git a/ui/src/scm-registry.ts b/ui/src/scm-registry.ts
index df26165..5305ff3 100644
--- a/ui/src/scm-registry.ts
+++ b/ui/src/scm-registry.ts
@@ -170,6 +170,10 @@ export class ScmRegistry extends LitElement {
     }
   }
 
+  async refresh() {
+    await this.loadRegistry();
+  }
+
   render() {
     if (this.loading) {
       return html`<div class="loading">Loading registry\u2026</div>`;
diff --git a/ui/src/shared/api.ts b/ui/src/shared/api.ts
index 1b272cf..9860e02 100644
--- a/ui/src/shared/api.ts
+++ b/ui/src/shared/api.ts
@@ -12,9 +12,12 @@ export class ScmApi {
 
   private async request<T>(path: string, opts?: RequestInit): Promise<T> {
     const res = await fetch(`${this.base}${path}`, opts);
-    const json = await res.json();
-    if (!json.success) {
-      throw new Error(json.error?.message ?? 'Request failed');
+    const json = await res.json().catch(() => null);
+    if (!res.ok) {
+      throw new Error(json?.error?.message ?? `Request failed (${res.status})`);
+    }
+    if (!json?.success) {
+      throw new Error(json?.error?.message ?? 'Request failed');
     }
     return json.data as T;
   }
@@ -28,15 +31,15 @@ export class ScmApi {
   }
 
   marketplaceItem(code: string) {
-    return this.request<any>(`/marketplace/${code}`);
+    return this.request<any>(`/marketplace/${encodeURIComponent(code)}`);
   }
 
   install(code: string) {
-    return this.request<any>(`/marketplace/${code}/install`, { method: 'POST' });
+    return this.request<any>(`/marketplace/${encodeURIComponent(code)}/install`, { method: 'POST' });
   }
 
   remove(code: string) {
-    return this.request<any>(`/marketplace/${code}`, { method: 'DELETE' });
+    return this.request<any>(`/marketplace/${encodeURIComponent(code)}`, { method: 'DELETE' });
   }
 
   installed() {
@@ -44,7 +47,7 @@ export class ScmApi {
   }
 
   updateInstalled(code: string) {
-    return this.request<any>(`/installed/${code}/update`, { method: 'POST' });
+    return this.request<any>(`/installed/${encodeURIComponent(code)}/update`, { method: 'POST' });
   }
 
   manifest() {