feat(blame): support every file-shaped git:// URI

lua/git/blame.lua

@@ -192,14 +192,26 @@ local function resolve_source(buf)
     local name = vim.api.nvim_buf_get_name(buf)
     if util.is_uri(name) then
         local rev = object.parse_uri(name)
-        if not rev or not rev.base or not rev.path then
+        if not rev then
             return nil
         end
         local r = repo.find(buf)
         if not r then
             return nil
         end
-        return { repo = r, rel = rev.path, revision = rev.base }
+        local rel = rev.path
+        if not rel then
+            local state = r:state(buf)
+            rel = state and state.blob_path or nil
+            if not rel then
+                return nil
+            end
+        end
+        local revision = nil
+        if rev.path and rev.base and rev.stage == nil then
+            revision = rev.base
+        end
+        return { repo = r, rel = rel, revision = revision }
     end
     if not repo.is_worktree_buf(buf) then
         return nil

lua/git/core/repo.lua

@@ -19,6 +19,7 @@ end
 ---@field immutable boolean?
 ---@field index_writer boolean?
 ---@field index_mode string?
+---@field blob_path string?
 
 ---@alias ow.Git.Repo.Event
 ---| "change"

lua/git/object.lua

@@ -321,6 +321,10 @@ local function side_buf(r, blob, path)
     if full then
         local buf = M.buf_for(r, Revision.new({ base = full }))
         set_ft_from_path(buf, path)
+        local state = r:state(buf)
+        if state then
+            state.blob_path = path
+        end
         return buf
     end
     local p = vim.fs.joinpath(r.worktree, path)