Remove redundant manual send_help from command groups

redbot.core.commands.Group has autohelp=True by default, and its invoke()
override already calls ctx.send_help() unconditionally whenever no
subcommand matches. Manually calling it too (the
`if ctx.invoked_subcommand is None: await ctx.send_help(ctx.command)`
pattern) caused help to be sent twice on every bare group invocation
across GhostWipe, ImageVault, and Affiliates. Verified against Red's
actual Group.invoke() source before fixing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

affiliates/affiliates.py

@@ -257,8 +257,6 @@ class Affiliates(commands.Cog):
     @commands.admin_or_permissions(administrator=True)
     async def poj(self, ctx: commands.Context):
         """👋 POJ — Ping on Join: mention new members, then auto-delete the ping."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @poj.command(name="enable", aliases=["on"])
     async def poj_enable(self, ctx: commands.Context):
@@ -275,8 +273,6 @@ class Affiliates(commands.Cog):
     @poj.group(name="channel")
     async def poj_channel(self, ctx: commands.Context):
         """Manage which channels ping new members on join."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @poj_channel.command(name="add")
     async def poj_channel_add(
@@ -345,8 +341,6 @@ class Affiliates(commands.Cog):
     @commands.guild_only()
     async def aff(self, ctx: commands.Context):
         """🤝 Affiliates — the affiliate-server board and DM affiliates."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @aff.command(name="channel")
     @commands.admin_or_permissions(administrator=True)
@@ -426,8 +420,6 @@ class Affiliates(commands.Cog):
     @aff.group(name="dm")
     async def aff_dm(self, ctx: commands.Context):
         """Manage the separate DM-affiliates list, sent to new members on join."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @aff_dm.command(name="add")
     @commands.admin_or_permissions(administrator=True)

ghostwipe/ghostwipe.py

@@ -644,8 +644,6 @@ class GhostWipe(commands.Cog):
     @commands.admin_or_permissions(administrator=True)
     async def ghostwipe(self, ctx: commands.Context):
         """👻 GhostWipe — auto-delete a departing member's messages, with a full HTML audit log."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @ghostwipe.command(name="enable", aliases=["on"])
     async def gw_enable(self, ctx: commands.Context):
@@ -699,8 +697,6 @@ class GhostWipe(commands.Cog):
     @ghostwipe.group(name="whitelist")
     async def gw_whitelist(self, ctx: commands.Context):
         """Manage users who are never purged, no matter how they leave."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @gw_whitelist.command(name="add")
     async def gw_whitelist_add(self, ctx: commands.Context, user: discord.User):
@@ -726,8 +722,6 @@ class GhostWipe(commands.Cog):
     @ghostwipe.group(name="ignorerole")
     async def gw_ignorerole(self, ctx: commands.Context):
         """Manage roles that exempt a member from being purged."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @gw_ignorerole.command(name="add")
     async def gw_ignorerole_add(self, ctx: commands.Context, role: discord.Role):
@@ -755,8 +749,6 @@ class GhostWipe(commands.Cog):
     @ghostwipe.group(name="ignorechannel")
     async def gw_ignorechannel(self, ctx: commands.Context):
         """Manage channels/threads GhostWipe never scans."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @gw_ignorechannel.command(name="add")
     async def gw_ignorechannel_add(
@@ -835,8 +827,6 @@ class GhostWipe(commands.Cog):
     @ghostwipe.group(name="report")
     async def gw_report(self, ctx: commands.Context):
         """Configure the HTML report output."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @gw_report.command(name="content")
     async def gw_report_content(self, ctx: commands.Context, toggle: bool):

imagevault/imagevault.py

@@ -253,8 +253,6 @@ class ImageVault(commands.Cog):
         Configuration and `list` are staff-only; `show`/`get`, `mine`, and `stats`
         are open to whoever the `retrieve` permission mode allows.
         """
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @imagevault.command(name="enable", aliases=["on"])
     @commands.admin_or_permissions(administrator=True)
@@ -306,8 +304,6 @@ class ImageVault(commands.Cog):
     @commands.admin_or_permissions(administrator=True)
     async def iv_watchchannel(self, ctx: commands.Context):
         """Manage the channel watch-list. Empty list = watch every channel."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @iv_watchchannel.command(name="add")
     async def iv_watchchannel_add(
@@ -340,8 +336,6 @@ class ImageVault(commands.Cog):
     @commands.admin_or_permissions(administrator=True)
     async def iv_ignorechannel(self, ctx: commands.Context):
         """Manage channels ImageVault never touches (only applies when the watch-list is empty)."""
-        if ctx.invoked_subcommand is None:
-            await ctx.send_help(ctx.command)
 
     @iv_ignorechannel.command(name="add")
     async def iv_ignorechannel_add(