Hover tool (#18)

* Hover tool

* test edit

* fix

* edit

* update snaps

* log version

* change rust-analyzer install

* update snaps

Author: isaacphi

.github/workflows/go.yml

@@ -100,11 +100,10 @@ jobs:
           override: true
 
       - name: Install rust-analyzer
-        run: |
-          mkdir -p ~/.local/bin
-          curl -L https://github.com/rust-analyzer/rust-analyzer/releases/latest/download/rust-analyzer-x86_64-unknown-linux-gnu.gz | gunzip -c - > ~/.local/bin/rust-analyzer
-          chmod +x ~/.local/bin/rust-analyzer
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
+        run: rustup component add rust-analyzer
+
+      - run: rustc --version
+      - run: rust-analyzer --version
 
       - name: Run Rust integration tests
         run: go test ./integrationtests/languages/rust/...

integrationtests/fixtures/snapshots/go/hover/constant.snap

@@ -0,0 +1,12 @@
+```go
+const SharedConstant untyped string = "shared value"
+```
+
+---
+
+SharedConstant is used in multiple files
+
+
+---
+
+[`main.SharedConstant` on pkg.go.dev](https://pkg.go.dev/github.com/isaacphi/mcp-language-server/integrationtests/test-output/go/workspace#SharedConstant)

integrationtests/fixtures/snapshots/go/hover/interface-method-impl.snap

@@ -0,0 +1,23 @@
+```go
+type SharedStruct struct {
+	ID        int
+	Name      string
+	Value     float64
+	Constants []string
+}
+```
+
+---
+
+SharedStruct is a struct used across multiple files
+
+
+```go
+func (s *SharedStruct) GetName() string
+func (s *SharedStruct) Method() string
+func (s *SharedStruct) Process() error
+```
+
+---
+
+[`main.SharedStruct` on pkg.go.dev](https://pkg.go.dev/github.com/isaacphi/mcp-language-server/integrationtests/test-output/go/workspace#SharedStruct)

integrationtests/fixtures/snapshots/go/hover/interface-type.snap

@@ -0,0 +1,15 @@
+```go
+type SharedInterface interface { // size=16 (0x10)
+	Process() error
+	GetName() string
+}
+```
+
+---
+
+SharedInterface defines behavior implemented across files
+
+
+---
+
+[`main.SharedInterface` on pkg.go.dev](https://pkg.go.dev/github.com/isaacphi/mcp-language-server/integrationtests/test-output/go/workspace#SharedInterface)

integrationtests/fixtures/snapshots/go/hover/no-hover-info.snap

@@ -0,0 +1,2 @@
+No hover information available for this position on the following line:
+import "fmt"

integrationtests/fixtures/snapshots/go/hover/outside-file.snap

@@ -0,0 +1 @@
+failed to get hover information: request failed: line number 999 out of range 0-40 (code: 0)

integrationtests/fixtures/snapshots/go/hover/struct-method.snap

@@ -0,0 +1,23 @@
+```go
+type SharedStruct struct {
+	ID        int
+	Name      string
+	Value     float64
+	Constants []string
+}
+```
+
+---
+
+SharedStruct is a struct used across multiple files
+
+
+```go
+func (s *SharedStruct) GetName() string
+func (s *SharedStruct) Method() string
+func (s *SharedStruct) Process() error
+```
+
+---
+
+[`main.SharedStruct` on pkg.go.dev](https://pkg.go.dev/github.com/isaacphi/mcp-language-server/integrationtests/test-output/go/workspace#SharedStruct)

integrationtests/fixtures/snapshots/go/hover/struct-type.snap

@@ -0,0 +1,23 @@
+```go
+type SharedStruct struct { // size=56 (0x38)
+	ID        int
+	Name      string
+	Value     float64
+	Constants []string
+}
+```
+
+---
+
+SharedStruct is a struct used across multiple files
+
+
+```go
+func (s *SharedStruct) GetName() string
+func (s *SharedStruct) Method() string
+func (s *SharedStruct) Process() error
+```
+
+---
+
+[`main.SharedStruct` on pkg.go.dev](https://pkg.go.dev/github.com/isaacphi/mcp-language-server/integrationtests/test-output/go/workspace#SharedStruct)

integrationtests/fixtures/snapshots/python/definition/class.snap

@@ -31,7 +31,7 @@ End Position: Line 59, Column 22
 41|        return self.value
 42|
 43|    @staticmethod
-44|    def static_method(items: List[str]) -> Dict[str, int]:
+44|    def static_method(items: list[str]) -> dict[str, int]:
 45|        """Convert a list of items to a dictionary with item counts.
 46|
 47|        Args:
@@ -40,7 +40,7 @@ End Position: Line 59, Column 22
 50|        Returns:
 51|            A dictionary mapping items to their counts
 52|        """
-53|        result: Dict[str, int] = {}
+53|        result: dict[str, int] = {}
 54|        for item in items:
 55|            if item in result:
 56|                result[item] += 1

integrationtests/fixtures/snapshots/python/definition/method.snap

@@ -32,7 +32,7 @@ End Position: Line 59, Column 22
 41|        return self.value
 42|
 43|    @staticmethod
-44|    def static_method(items: List[str]) -> Dict[str, int]:
+44|    def static_method(items: list[str]) -> dict[str, int]:
 45|        """Convert a list of items to a dictionary with item counts.
 46|
 47|        Args:
@@ -41,7 +41,7 @@ End Position: Line 59, Column 22
 50|        Returns:
 51|            A dictionary mapping items to their counts
 52|        """
-53|        result: Dict[str, int] = {}
+53|        result: dict[str, int] = {}
 54|        for item in items:
 55|            if item in result:
 56|                result[item] += 1