feat(memory): per-field info tooltips + name the profile in the full-config modal

Fields can declare a longer 'info' text rendered as an (i) tooltip next to
the label in both the panel and the modal; honcho uses it to spell out the
session strategy, write frequency, and recall mode semantics. The modal
description claimed 'the active profile' without saying which — show the
active gateway profile name.

plugins/memory/config_schema.py

@@ -78,6 +78,8 @@ class ProviderField:
     env_fallbacks: tuple[str, ...] = ()
     inline: bool = False
     group: str = ""
+    # Longer help text surfaced as an info tooltip next to the field label.
+    info: str = ""
     # Host-block placement: "host" (per-profile) or "root"; flat-json ignores it.
     scope: str = "host"
 

plugins/memory/honcho/config_schema.py

@@ -100,6 +100,12 @@ CONFIG_SCHEMA = ProviderConfigSchema(
             kind=KIND_SELECT,
             default="per-directory",
             description="How conversations map to Honcho sessions.",
+            info=(
+                "Per session: every conversation gets its own Honcho session. "
+                "Per directory: conversations from the same working directory share one. "
+                "Per repo: conversations from the same git repo share one. "
+                "Global: everything shares a single session."
+            ),
             options=(
                 ProviderFieldOption("per-session", "Per session"),
                 ProviderFieldOption("per-directory", "Per directory"),
@@ -181,6 +187,11 @@ CONFIG_SCHEMA = ProviderConfigSchema(
             kind=KIND_TEXT,
             default="async",
             description="When to flush messages: async, turn, session, or every N turns.",
+            info=(
+                "async: write in the background as messages arrive. "
+                "turn: flush after each turn. session: flush when the session ends. "
+                "A number N flushes every N turns."
+            ),
             placeholder="async | turn | session | N",
             group="Message writing",
         ),
@@ -259,6 +270,11 @@ CONFIG_SCHEMA = ProviderConfigSchema(
             kind=KIND_SELECT,
             default="hybrid",
             description="How memory retrieval works: hybrid, context-only, or tools-only.",
+            info=(
+                "Hybrid: auto-injected context plus on-demand memory tools. "
+                "Context only: injection without tools. "
+                "Tools only: the model queries memory explicitly, nothing is injected."
+            ),
             options=(
                 ProviderFieldOption("hybrid", "Hybrid"),
                 ProviderFieldOption("context", "Context only"),