Chatbot with langchain

[JulienDroulez]

No description provided.

[Copilot]

Pull request overview

This PR introduces a LangChain-based chatbot streaming endpoint with MCP tooling support, plus a PGVector-backed “vector store” ingestion/admin UI for uploading/searching PDF content, along with related runtime config, k8s env wiring, and i18n additions.

Changes:

• Add LangChain + LangGraph streaming chat route and integrate MCP tools / vector retriever tool.
• Add PGVector store initialization utility plus secured server routes to ingest/list/get/delete vectorized documents.
• Add Admin UI tab/components to manage vector-store documents and extend locales/configuration.

Reviewed changes

Copilot reviewed 33 out of 34 changed files in this pull request and generated 24 comments.

Show a summary per file

File	Description
yarn.lock	Adds LangChain, pg, uuid, and related transitive deps.
package.json	Adds LangChain/PG/vector-store dependencies (and an extra unused dep).
nuxt.config.ts	Adds runtimeConfig keys for LangChain + vector DB (but includes a breaking typo).
k8s/projects-frontend/values.yaml	Adds Helm env vars for LangChain + vector DB config.
k8s/projects-frontend/values.dev.yaml	Adds dev Helm env vars for LangChain + vector DB config.
.env.sample	Documents new LangChain/vector DB env vars and fixes minor whitespace.
.zed/debug.json	Adds Zed debug config for attaching to Nuxt.
src/server/routes/api/chat-lg-stream.ts	New LangChain streaming endpoint with MCP + vector retriever tool.
src/server/utils/vector-db.js	New PGVectorStore + pg Pool initialization helper.
src/server/utils/check-vector-db-rights.js	New authz helper to restrict vector-store endpoints to superusers.
src/server/routes/api/vector-store/list.get.ts	New endpoint to list ingested docs by title/chunk count.
src/server/routes/api/vector-store/get.get.ts	New endpoint to fetch chunks for a given title.
src/server/routes/api/vector-store/ingest.post.ts	New endpoint to ingest a PDF into the vector store.
src/server/routes/api/vector-store/delete.delete.ts	New endpoint to delete vectors by title/orgCode.
src/server/routes/mcp/index.ts	Adds extra MCP tracing logs (includes a typo).
src/pages/AdminPortalPageV2/AdminPortalPage.vue	Adds a “Vector store” tab for super admins.
src/app/useAdminPagesRoutes.ts	Adds a new admin route for the vector-store tab.
src/pages/AdminPortalPageV2/Tabs/VectorStoreAdminTab.vue	New admin tab UI for listing/adding/editing/deleting documents.
src/components/VectorStoreDocumentList.vue	New component to list vector-store documents.
src/components/VectorStoreDocumentShow.vue	New component to display document chunks.
src/components/VectorStoreIngestionForm.vue	New drawer form to upload/ingest documents.
src/components/app/ChatBotDrawer.vue	Adds profile/page-context injection toggles for chatbot prompt context.
src/app/useProjectPagesRoutes.ts	Adds route meta used as chatbot context on project pages.
src/mcp-server/projects/base.ts	Imports orgCode for tool query usage (context for project-tool change).
src/mcp-server/projects/project-tool.ts	Adjusts “similar projects” tool request/query mapping logic.
src/mcp-server/projects/sdg-tool.ts	Replaces hardcoded SDGs with src/data/sdgs.json.
src/data/sdgs.json	Adds SDG titles/descriptions alongside colors.
src/components/people/UserProfile/UserProjectsSearch.vue	Adds null-guard to avoid errors on empty responses.
src/i18n/locales/en.json	Adds vector-store strings + new chatbot permission strings (typos + duplicate key).
src/i18n/locales/fr.json	Adds vector-store strings + new chatbot permission strings.
src/i18n/locales/de.json	Adds vector-store strings + new chatbot permission strings.
src/i18n/locales/es.json	Adds vector-store strings + new chatbot permission strings.
src/i18n/locales/ca.json	Adds vector-store strings + new chatbot permission strings.
src/i18n/locales/nl.json	Adds vector-store strings + new chatbot permission strings.
src/i18n/locales/et.json	Adds vector-store strings + new chatbot permission strings.

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[Copilot]

Pull request overview

Copilot reviewed 33 out of 34 changed files in this pull request and generated 15 comments.

Comments suppressed due to low confidence (2)

src/mcp-server/projects/project-tool.ts:288

• In project-similar, results is initialized as {} but the output schema declares results as an array. If the fetch fails, the tool will return { results: {} }, violating the schema and potentially breaking clients. Initialize results as [] (and keep it an array on error paths).

    async ({ idOrSlug }, extras) => {
      let results = {}
      try {
        const queryResult: any = await mcpFetch(
          // TODO: use org code from config
          `${API_BASE_URL}project/${idOrSlug}/similar/`,
          {
            query: {
              organizations: orgCode,
            },
          },
          extras
        )
        console.log('queryResult', queryResult)
        results = queryResult.map((p: any) => mapProjectPreview(p))
      } catch (error) {
        console.error('Error fetching project similar projects:', error)
      }
      const output = { results }

src/mcp-server/projects/project-tool.ts:290

• This adds console.log('queryResult', queryResult) (and later logs the tool call output). These logs can be very noisy and may include user/project data. Consider removing them or routing through the existing traceMcp mechanism so they can be enabled/disabled via config.

        console.log('queryResult', queryResult)
        results = queryResult.map((p: any) => mapProjectPreview(p))
      } catch (error) {
        console.error('Error fetching project similar projects:', error)
      }
      const output = { results }
      console.log('MCP TOOL CALLED: project-similar-projects', { idOrSlug, output })
      return {

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[Copilot]

Pull request overview

Copilot reviewed 33 out of 34 changed files in this pull request and generated 12 comments.

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