feat(cli): even out the shipped tool rosters across both surfaces

The two shipped surfaces offered different tools for no recorded reason:
session checkpoints, tool-result pruning, the goal tools, and Ralph were in
`tui.cordis.yml`; `tool-todo` and web search were in `web.cordis.yml`. Neither
offered session search, a string-replacement editor, or a repeat-tool guard,
though none of the three is surface-specific.

Move the rows that are not surface-specific into `base.cordis.yml` and add
those three. Web search moves there too — the TUI decision the change that
made it a Web default deferred. Both surfaces now assemble the same 27 tools.

This adds only. No row is removed from either surface and no existing row's
configuration is edited: executors, sandbox composition, access defaults,
`tools.mode`, and the workflow tool are exactly what they were. Two rows stay
surface-specific: `tmux-context` (no terminal multiplexer in a browser) and
`session-reference` (its index has one writer owner).

Ship `dsh-mcp-client` as a dependency without a row: the plugin mounts one
server per instance and `command` is required, so a default would name a
third-party server and spawn it outside `ctx.bash` on every launch. The CLI
README carries the YAML for mounting one from a personal config.

pnpm-lock.yaml

@@ -279,6 +279,9 @@ importers:
       '@deepseek-ai/dsh-llm-retry':
         specifier: workspace:^
         version: link:../../packages/llm/llm-retry
+      '@deepseek-ai/dsh-mcp-client':
+        specifier: workspace:^
+        version: link:../../packages/mcp/mcp-client
       '@deepseek-ai/dsh-paths':
         specifier: workspace:^
         version: link:../../packages/util/paths
@@ -288,6 +291,9 @@ importers:
       '@deepseek-ai/dsh-plan-mode':
         specifier: workspace:^
         version: link:../../packages/plan/plan-mode
+      '@deepseek-ai/dsh-repeat-tool-guard':
+        specifier: workspace:^
+        version: link:../../packages/guard/repeat-tool-guard
       '@deepseek-ai/dsh-sandbox-local':
         specifier: workspace:^
         version: link:../../packages/sandbox/sandbox-local
@@ -375,6 +381,9 @@ importers:
       '@deepseek-ai/dsh-timeout-policy':
         specifier: workspace:^
         version: link:../../packages/timeout/timeout-policy
+      '@deepseek-ai/dsh-tmux-context':
+        specifier: workspace:^
+        version: link:../../packages/context/tmux-context
       '@deepseek-ai/dsh-token-meter':
         specifier: workspace:^
         version: link:../../packages/llm/token-meter
@@ -399,9 +408,15 @@ importers:
       '@deepseek-ai/dsh-tool-ralph':
         specifier: workspace:^
         version: link:../../packages/workflow/tool-ralph
+      '@deepseek-ai/dsh-tool-session-query':
+        specifier: workspace:^
+        version: link:../../packages/session-query/tool-session-query
       '@deepseek-ai/dsh-tool-skill':
         specifier: workspace:^
         version: link:../../packages/skill/tool-skill
+      '@deepseek-ai/dsh-tool-str-replace-editor':
+        specifier: workspace:^
+        version: link:../../packages/fs/tool-str-replace-editor
       '@deepseek-ai/dsh-tool-subagent':
         specifier: workspace:^
         version: link:../../packages/subagent/tool-subagent