feat: UI fixes + boocontext remainders — Memory project selector, agent event toasts, codecontext→boocontext left-overs

Fixes 3 remaining UI items from the component-wiring audit:
  - Memory page: project selector dropdown (Item 1)
  - Agent events: collision_warning + agent_message toasts via sonner (Item 2)
  - Reasoning delta already wired and working (Item 3)

Also picks up uncommitted boocontext rename changes from the subagent batch:
  - synthesisPipeline.ts tier tool names updated
  - tiers.ts STANDARD_TOOL_NAMES clears old codecontext tools
  - tool-utils.ts BUILT_IN_TOOLS updated
  - .env.example / README.md reference boocontext MCP
  - ROADMAP.md boocontext entry
  - codecontext/ dir + docs/codecontext-ts-plan.md removed (already gone from tree)

.codesight/CODESIGHT.md

@@ -3,9 +3,9 @@
 > **Stack:** fastify, go-net-http | none | react | typescript
 > **Microservices:** @boocode/contracts, @boocode/ion, @boocode/booterm, @boocode/coder, @boocode/server, @boocode/web, codecontext, @boocode/conductor
 
-> 147 routes (9 inferred) + 9 ws | 23 models | 92 components | 296 lib files | 43 env vars | 17 middleware
+> 147 routes (9 inferred) + 9 ws | 23 models | 92 components | 288 lib files | 42 env vars | 16 middleware
 > **Token savings:** this file is ~0 tokens. Without it, AI exploration would cost ~0 tokens. **Saves ~0 tokens per conversation.**
-> **Last scanned:** 2026-06-08 03:49 — re-run after significant changes
+> **Last scanned:** 2026-06-08 04:10 — re-run after significant changes
 
 ---
 
@@ -1012,19 +1012,11 @@
   - function getBackgroundTaskResult: (sql, taskId, chatId) => Promise<
   - function cancelBackgroundTask: (sql, taskId) => Promise<boolean>
   - interface BackgroundTask
-- `apps/server/src/services/boocontext_client.ts`
-  - function callBoocontext: (req, log?, msg) => void
-  - interface BoocontextRequest
-  - interface BoocontextResponse
 - `apps/server/src/services/broker.ts`
   - function createBroker: (log?) => Broker
   - interface Broker
   - type Frame
   - type Listener
-- `apps/server/src/services/codecontext_client.ts`
-  - function callCodecontext: (req, fetcher) => Promise<CodecontextResponse>
-  - interface CodecontextRequest
-  - interface CodecontextResponse
 - `apps/server/src/services/coder-notify.ts` — function notifyCoderClose: (kind, id, log?, 'debug'>, fetcher) => Promise<boolean>, type CoderCloseKind
 - `apps/server/src/services/compaction.ts`
   - function usable: (contextLimit) => number
@@ -1310,34 +1302,6 @@
   - type SubagentStatusInputT
   - type SubagentResultInputT
   - _...6 more_
-- `apps/server/src/services/tools/codecontext/factory.ts` — function makeCodecontextTool: (opts, unknown>;
-  mapArgs) => void
-- `apps/server/src/services/tools/codecontext/get_code_health.ts`
-  - function executeGetCodeHealth: (input, projectPath) => Promise<string>
-  - type GetCodeHealthInputT
-  - const GetCodeHealthInput
-  - const getCodeHealth: ToolDef<GetCodeHealthInputT>
-- `apps/server/src/services/tools/codecontext/get_code_impact.ts`
-  - function executeGetCodeImpact: (input, projectPath) => Promise<CodecontextResponse>
-  - type GetCodeImpactInputT
-  - const GetCodeImpactInput
-  - const getCodeImpact: ToolDef<GetCodeImpactInputT>
-- `apps/server/src/services/tools/codecontext/get_code_map.ts`
-  - function executeGetCodeMap: (input, projectRoot) => Promise<CodeMapResponse>
-  - interface CodeMapResponse
-  - type GetCodeMapInputT
-  - const GetCodeMapInput
-  - const getCodeMap: ToolDef<GetCodeMapInputT>
-- `apps/server/src/services/tools/codecontext/get_type_info.ts`
-  - function executeGetTypeInfo: (input, _projectPath?) => Promise<CodecontextResponse>
-  - type GetTypeInfoInputT
-  - const GetTypeInfoInput
-  - const getTypeInfo: ToolDef<GetTypeInfoInputT>
-- `apps/server/src/services/tools/codecontext/get_wiki_article.ts`
-  - function executeGetWikiArticle: (input, projectPath) => Promise<string>
-  - type GetWikiArticleInputT
-  - const GetWikiArticleInput
-  - const getWikiArticle: ToolDef<GetWikiArticleInputT>
 - `apps/server/src/services/tools/execute-command.ts`
   - function executeRunCommand: (input, projectRoot) => Promise<RunCommandOutput>
   - type RunCommandInputT
@@ -1685,7 +1649,6 @@
 - `BRAINSTORM_PORT` **required** — data/skills/superpowers/brainstorming/scripts/server.cjs
 - `BRAINSTORM_URL_HOST` **required** — data/skills/superpowers/brainstorming/scripts/server.cjs
 - `CODECONTEXT_CHILD` **required** — codecontext/shim.go
-- `CODECONTEXT_URL` **required** — apps/server/src/services/codecontext_client.ts
 - `CONDUCTOR_MODEL` **required** — conductor/src/dispatch.ts
 - `CONDUCTOR_OPENCODE_BIN` **required** — conductor/src/dispatch.ts
 - `CONDUCTOR_TIMEOUT_MS` **required** — conductor/src/dispatch.ts
@@ -1733,7 +1696,6 @@
 - authoring — `apps/coder/src/conductor/flows/authoring.ts`
 - turn-guard.test — `apps/coder/src/services/backends/__tests__/turn-guard.test.ts`
 - turn-guard — `apps/coder/src/services/backends/turn-guard.ts`
-- get_middleware — `apps/server/src/services/tools/codecontext/get_middleware.ts`
 - authoring — `conductor/src/flows/authoring.ts`
 - spec — `openspec/changes/add-behavioral-engine/specs/audit-middleware/spec.md`
 
@@ -1767,8 +1729,6 @@
 - `apps/coder/src/services/agent-backend.ts` — imported by **14** files
 - `apps/coder/src/services/acp-tool-snapshot.ts` — imported by **14** files
 - `apps/server/src/config.ts` — imported by **14** files
-- `apps/server/src/services/tools/codecontext/factory.ts` — imported by **14** files
-- `apps/server/src/services/tools/types.ts` — imported by **13** files
 - `conductor/src/types.ts` — imported by **13** files
 - `apps/coder/src/services/provider-config-registry.ts` — imported by **12** files
 - `apps/coder/src/config.ts` — imported by **11** files
@@ -1777,6 +1737,8 @@
 - `apps/server/src/services/agents.ts` — imported by **10** files
 - `apps/server/src/services/path_guard.ts` — imported by **10** files
 - `apps/coder/src/services/pending_changes.ts` — imported by **9** files
+- `apps/server/src/services/inference/payload.ts` — imported by **9** files
+- `apps/server/src/services/inference/dcp/messages.ts` — imported by **9** files
 
 ## Import Map (who imports what)